IMac :: ATI 4850 - Old Leopard Installation

Apr 15, 2009

this is my first posting but I am desperate and need some help Apple could not provide. Here is my situation:

- new iMac 9,1 2,93 GHz, 4 GByte, ATI Radeon 4850
- pre-installed OS: Leopard 10.5.6

I have access to a MBP and an older iMac. The MBP had a defective logic board some months ago so I decided to copy its content (after repair) to an external hard drive. I used this hard drive as my primary OS and used it with the MBP or iMac and did have the same data all the time - excellent time-saver for me. Now the new iMac was shipped yesterday. I tried to boot it from the very same external hard drive as well. It worked but there are some annoying facts I need some help to deal with: I cannot activate sleep mode with the new iMac. The graphics card seems not to work well: stuttering screen saver, slow high definition video playback, slow spaces etc. I cannot dim the monitor's backlight with F1/F2 keys nor the monitor setup. All these problems disappear when I boot from the internal HDD but that is not an option for me. It looks like the "old" Leopard installations lacks of some drivers. Is there a way to add them, is there another solution or will an update of Leopard 10.5.7 - at least most likely - solve the problem? Apple support did not feel the need to help for "exotic configurations". I was told a fresh installation of a retail Leopard copy on an external hard drive COULD work (no guarantee) but it would take me too much time to re-configure and I don't feel the desire to set up my system fresh and new like in old Windows days.

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OS X :: Need To Backup IMac Before Snow Leopard Installation?

Aug 31, 2009

I'm upgrading my mac to snow leopard but I don't really have a external hard drive to back up my data or the software to do the backup. Is it safe to do an upgrade without backing up?

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IMac :: Radeon 4850 Based IMac Froze More Than Once?

Apr 16, 2009

Has it frozen more than once since the time you've received it. Hopefully we can get some idea of what's going on. specify what CPU your system is running (2.93 or 3.06 ghz), along with info when you ordered the system, and when it was shipped.

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IMac :: NVIDA Or ATI 4850?

Apr 17, 2009

so I have decided to get a new iMac 24inch 3.06. The question at hand is do I need to upgrade to the ATI Radeon HD 4850?

I dont play video games. I do edit large raw photo files with CS4 and I do use Final Cut Express for my video editing. What do you think. Thanks again in advance for your input.

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IMac :: Unable To Fix 10.5.7 For 4850's?

Apr 24, 2009

If 10.5.7 does not fix the belief that wifi is causing freezes (or whatever it might be), we will be further down Apple's care list.

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IMac :: 4850 Pc Review And Specs

Mar 10, 2009

I thought I would post this as the pc used in this review is very close to the top of the line imac. I included the pc specs below used in the review. Assuming the card in the imac is not the mobile version and the one listed in this review, those who wait are in for an amazing machine.



nVIDIA nForce 680i SLI (eVGA) (1)
Intel X48 (ASUS) (2)


Core 2 Duo X6800 Extreme (2.9 ghz)

Graphics Cards
ati 4850 and 4870


2048 MB (2x1024MB) DDR2 CAS4 @ 1142 MHz Dominator Corsair

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IMac :: ATI 4850 - Desktop Or Laptop?

Mar 17, 2009

I wrote it in another thread, but maybe I went OT, so...Does anyone know for sure if the ATI 4850 is the desktop version or the laptop version? I'm going to order the iMac24 but I want to be sure that the ATI card worth the money.

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IMac :: How Hot Do The 4850 Machines Run Compared To The 130 Or 120?

Apr 27, 2009

Has anyone done some sort of a comparison?

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IMac :: Nvidia 130 Versus ATI 4850

Jul 13, 2009

Is there much difference from a stock iMac with Nvidia GT 130 vs ATI HD 4850 for gaming? It would be nice to be able just to buy a stock machines rather than a custom with the ATI for $50.

My real concern is overall gaming proformance and heat produced by the two cards. Current iMac has the ATI 2600 HD Pro, which I think is pretty slow compared.

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IMac :: 5750 Slower Than 4850?

Jul 27, 2010

correct me if I'm wrong but the 4850 has 800 pipelines and a 256 mb bus width as apposed to the 400 pipelines and 128 mb bus width in the 5750?

step backwards in terms of graphics?

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IMac :: It's The Radeon HD 4850 Better Than The HD 5670

Jul 27, 2010

Who are well aware of the difference but video cards is something that i am not familiar with. I'm deciding between i5 refurb or the new i3 i am more interested in graphics power than cpu btw

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IMac :: To Update ATI 4850 With The HD 5750 ?

Jul 29, 2010

I have an 2009 27inch imac with an ATI Radeon HD 4850 and was wondering if it is somehow possible to take the 5750 from a 2010 model and replace the 4850 with it?

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IMac :: GeForce GT 130 Versus Radeon HD 4850?

Mar 3, 2009

I'm going to be ordering my new iMac within the next couple days but need a little advice first.

Obviously, the 4850 is more powerful, but if these two cards had the exact same specs, would ATI or nVidia be the better choice?

Which company is Apple leaning towards, which company produces better Mac drivers, how will OpenCL play into this, etc.

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IMac :: Reinstalling OS X - Linked To 4850 Card

Apr 17, 2009

Those of you with the ATi 4850 card, is there any who have completed a reinstall and then still suffered with the freezing problem afterwards.

If so I am going to get back on to Applecare and demand a replacement.

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IMac :: 4850 EFI Firmware Update To Fix Freeze Ups

May 2, 2009

It's avihappy again and I have another survey for you all. As you can see, there is now an iMac 4850 EFI firmware update available via software update. So can you: Find a test that will cause the iMac to freeze up. Do the update. (make sure you actually run the firmware updater tool, it may not run automatically when you install the update from Software Update.) Switch to WiFi. Do the test again. See if the iMac freezes!

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IMac :: Won't Work With Radeon 4850 After EFI Firmware 1.4

May 30, 2009

I got my wife the new iMac with a Radeon 4850 to replace her ancient PC (and I meant ANCIENT) and she had massive issues with lockups due to overheating, especially when playing fullscreen 3D games like World of Warcraft in Mac OSX or any of her Windows XP games in bootcamp.

After the EFI Firmware Update 1.4 she's had far less issues, but she's still had 1 lockup (playing Diablo 2 stangly enough, a very old low detail game) and graphical glitches in WoW which caused her to stop playing out of fear of a lockup before it could happen.

Her computer temps are still extremely high but our house temp is only 72degrees.

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IMac :: ATI Radeon Hard Drive 4850 GPU?

Oct 25, 2009

Loving the new iMac revisions and have placed my order for the Core i7 configuration with 8 Gigs of RAM, the only thing that slightly concerns me is Apple putting the ATI 4850 GPU in this machine as this card has been around for well over a year. Having a young family my iMac really has to last me (current Mac is my old but faithful 800Mhz G4 Angle Poise 17" screen iMac) so don't want to get caught out with an "old" GPU that within a 2-3 years won't be able to cope with current day demands placed on it. My usage is photo manipulation, a bit of FCP and I want to be able to play some 3D games etc. but I'm by no means some games enthusiast who requires the highest frame rate, highest settings. Figure I have two option:

A. Bite the bullet now - this iMac has almost everything I want - been waiting for Quad Core desktop chip and LED screen but icing on the cake would have been better GPU and Blu-ray option.

B. Wait yet another update (figure March / April 2010) in the hope that Apple put in a more current GPU and possibly Blu-ray option. HOWEVER I figure that this is probably a fools game as who knows regarding Blu-ray and obviously a more current GPU will be fitted but probably won't be the most extreme one as Apple tend not to figure that this is a priority on the iMac.

My inclination is that this update will probably be absolutely fantastic and my GPU worries are probably unfounded as I'll never want to push it to gaming extremes but interested what others may think.

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IMac :: Finding A Quad Core Or The 4850?

Nov 17, 2009

I know 300 dollars for a bump from C2D/4670 to a i5/4850 is easily one of the best upgrades Apple has offered in a long, long time.... but would I really need it?

I was primarily going to be using the iMac for everyday stuff (word/browsing/etc) and for games occasionally by others. I don't need everything running on ultra with AA on or anything, just visually comparable to PS3/X360. I will be doing a lot of Photoshop/illustrator things as well and might get into video editing.

I was thinking maybe I could hold out on going quad core for a couple years until Macbook Pro lines get it at a reasonable price then I can just use the iMac as a gorgeous led and media hub in the background as I do my work on the Macbook Pro.

I've seen the benchmarks, but how does it work out in real world situations?

What would having Quad cores do for me except help me handle files/render a few seconds faster here and there? I'm sure it's a tremendous boost in things like encoding but how would it help when it comes to image editing?

Is the 4850 a huge bump in specs compared to the 4670? Is the performance gap similar to going from 9400 to the 9600?

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IMac :: Common Denominator With Lockups For 4850 ATI Version?

Apr 18, 2009

I don't mean to start a new Thread but I think this one could really pinpoint the problem if we could get some good feedback on this. What is the Common Denominator (besides having the HD4850 option) that could be causing the lockups that some people are having.

Examples Is everyone who is experiencing lockups :
1.) Installed Boot Camp and using Windows with this HD4850 option?
2.) Do you use Safari exclusively and not FireFox?
3.) Does it happen only when Surfing ?
4.) Does it happen only when playing a certain game like WOW?
5.) Does it happen only after you been using the iMac for a few hours?
so on. . .

See my point? Write down or make yourself notes to as what you were doing exactly when it locked up? Reply to this Thread and lets figure this out. It will be must easier if everyone could put their situation in this Thread and maybe we can get to the bottom of this.

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IMac :: Unable To Work With Radeon 4850 / Freeze

Apr 28, 2009

do you think the issue with the radeon is the hardware or do you think a simple update in the future will fix it?

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IMac :: 27 Inch Quad Core I7 HD 4850 Temperature?

Nov 18, 2009

I just wanted to share what's been going on with my i7 which I received last Friday. Immediately I was curious about what sort of temps I was going to be running so I installed Temperature Monitor. At idle my graphics readings hover around 40C. However, when playing Warcraft 3 my Graphics Processor Temperature Diode reaches up to 84C.

I don't really know what temps are acceptable, I was just wondering what other i7 HD4850s out there are running. To deal with this seemingly high temperature I installed smcFanControl and boosted all fan speeds by 50%. Noise doesn't seem to be proportional to fan speed at these levels so no probs there. Now I run at 64C at load and I am at peace with that.

Shouldn't the OS be increasing fan speed on its own?

Would like to know what you guys think and observe in your i7 machines

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Windows On Mac :: Info Needed Regarding 27" IMac ATI 4850 In Windows7?

Feb 7, 2010

Can someone with a 27 inch iMac with the ATI Radeon 4850 video card running Windows 7 via bootcamp please look under device manager and let me know the driver version and date.

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IMac :: ATI 4850 Windows Drivers - Finding Current Status?

Jun 20, 2010

I gather there've been more than a few headaches getting working video drivers for the ATI 4850 in the iMac (windows side). A few posts have said that version 8.661 of the AMD driver (Catalyst 9.10) works, but other versions including newer ones, don't.

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IMac :: ATI Radeon HD 4850 512MB" Graphic Card Good To Run FCP

Jul 10, 2009

Will i have any problems running Final Cut Pro with these cinfigurations on my iMac 2009?3.06GHz Intel Core 2 Duo 8GB Memory 1.0TB Serial ATA Drive ATI Radeon HD 4850 512MB Is this "ATI Radeon HD 4850 512MB" graphic card good to run FCP?

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OS X :: Snow Leopard Installation / Unable To Do Clean Snow Leopard Installation

Oct 19, 2009

Question: I already have snow leopard installed on my iMac. But can I still do a CLEAN snow leopard installation onto my imac even though snow leopard is already installed?

I tried it just now like twice but I got the spinning wheel of death. It wouldn't go pass the apple sign and spinning wheel.

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IMac :: IMac GT 130 Or HD 4850?

Mar 5, 2009

I'm trying to decide between these two GPUs for my purposes, which are:

- no gaming
- recording programs using EyeTV
- transcoding those programs to AppleTV
- using Handbrake to move my DVDs to AppleTV
- running iTunes full time in support of a couple ATV boxes
- using Aperture, iPhoto, iMovie, and Photoshop occasionally
- run a VM or two

At minimum I'd like to be able to have EyeTV transcoding video to ATV while HB is working since that combination tends to be more than enough to deadlock my MacBook Pro.

I get where I need to be from a CPU and RAM perspective, but I have no clue regarding whether EyeTV Hybrid 250 or Handbrake exploit the GPU capabilities which differentiate, say, a GT120, GT130 with 256 or 512, or the 4850, particularly when moving TV shows from EyeTV native to ATV and Handbraking.

That's my biggest bottleneck and if I can address it with any of these GPUs while using my iMac for more sophisticated photo and video editing and watching video on it - all in one stop - then I'd prefer to buy the cheapest graphics option and save some serious cash.

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IMac :: New IMac 3.066 With 4850 DOA?

Apr 14, 2009

I received my new iMac last week, one of the first delivered in the US. Today, after a few days of use, it decided to stop working.

I called Apple support and we tried everything and could not even get it to boot from the install disk.

They declared it DOA and arranged for a replacement to be sent, after I ship this one back to them via FedEx. Kind of a bummer after waiting all that time (ordered on March 3) and using it for a few days...

Now, I have to bring the iMac to the FedEx place and wait for Apple to get notified by FedEx that it is being returned then they will initiate a build of a new iMac to be sent on a priority basis.

So it looks like it will be next week at the earliest that I see another iMac..... Not only that, but I registered my Apple care with that iMac and several software programs which will necessitate more emails and phone calls to get that straightened out.

What a royal pain in the butt.

At times like this, I wish I had gone to the local (40 miles away) Apple store and purchased it without the 4850 and numeric keypad..... at to say the least....

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IMac :: 24" With ATI Radion HD 4850 Display/fixing Late Display?

Sep 22, 2009

i am having a weird problem with my brand new imac.. I bought it custom made last friday with ATI Radeon HD 4850. Now here is my issue.. Every time i boot up it takes a while for the screen to turn on. I hear the start up sound and HDD working and all that but screen stays off for another 5+ sec. before finally going grey before apple logo comes up. Now I thought this isn't an issue since i did order it with ATI card instead of standard Nvidia. Figured different cards react differently. However, later on after playing a game for few hours and doing a restart it would do the same thing, but the screen would never turn on. Just stay black forever until i shut it down and wait a minute or two then power it back on. So to clear this up. What happens is, i push power button, start up sound happens, then black.... like it is off, not even the back light. This only happens every few days, not every restart.. I reset SMC, PRAM, ran hardware test, spoke with apple on phone, went to genius bar, and after all that and being passed around now the apple engineers are looking into my problem and i am expecting a call back from them. So i guess my question is, is there anyone else with this setup (ATI Radion) that has this issue?

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IMac :: 24 2.66 Versus 2.93 / Gt130 Versus 4850

Aug 17, 2009

Two short questions on which I really need an answer. This academic year, I'll be writing a lot of papers, but most specifically, I am forced to use SPSS (statistical software package for social sciences).

Will I really need the 2.93 over the 2.66 and notice the improvement?

Same goes for the gfx. I like full-hd 1080, I'll be in InDesign, and use Logic Pro. Will I need "slash" notice the 4850 over the gt130?

Also, are the "hang-ups" with the 4850 truly fixed and does it indeed run a lot hotter (inc. really that more noise) than the gt130?

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IMac PPC :: Imac G3 Installation Of Tiger Cd Won't Boot?

May 14, 2012

I have the CD version of tiger and am trying to install it to a recently purchased iMac G3. The Installer installs disc 1, resets, but doesn't boot up to install disc 2, it simply asks again to install disc 1. The Mac for some reason will not boot from the installed software and therefore I cannot complete installation. Can anyone figure out why the mac refuses to boot from the HD in order to install disc 2?

iMac, Mac OS X (10.4)

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