How come Apple downgraded its iMac video card?

togermano

macrumors regular
Original poster
Aug 10, 2007
174
0
So far all the tests prove the nvidia card was better then the 2600 pro. Do you think apple will release drivers to fix this? Is the 2600 pro replaceable?
 

flopticalcube

macrumors G4
So far all the tests prove the nvidia card was better then the 2600 pro. Do you think apple will release drivers to fix this? Is the 2600 pro replaceable?
Try playing a DX10 game with the old nvidia card. The new cards are cooler than the old desktop nvidia cards. Drivers can certainly be an issue, as can the way the older games were written. Newer games that take advantage of the newer cards architecture should run faster. They are not replaceable as they are MXM boards with custom firmware.
 

AC773

macrumors member
Feb 28, 2006
59
0
So far all the tests prove the nvidia card was better then the 2600 pro. Do you think apple will release drivers to fix this? Is the 2600 pro replaceable?
Excellent question.

The last-gen 24" iMacs used MXM modules for their nVidia cards. It's a technology for laptops that nVidia developed, hoping to lead the way in replaceable mobile graphics. It never really caught on as an aftermarket standard, but many manufacturers use it to make the assembly process more efficient.

Now I'm not sure if nVidia's ever licensed this technology, so I don't know if it's used in the new iMacs with the ATI HD cards. If it is, though, that's your upgrade path.
 

jesteraver

macrumors 6502
May 16, 2006
333
0
Montreal, QC
All games out now are DX9, this card DX10. If Apple used a DX10 nVidia card, seeing they don't have a mobile card yet, we would still have the same problem.

Plus what is the use to have a DX10 capable card when you need Windows Vista for it anyways!?
 

rest44

macrumors member
Sep 24, 2006
53
0
Another issue was certain heat! They make the iMac thinner and this gpu probably doesn´t make much heat.. so they put it in there.
 

Archmagination

macrumors regular
Dec 15, 2004
159
0
These cards have built in video decoding support.. if you do a lot of video work they will help out tremendously. They also they support DX10 while the older cards only supported DX9. One last thing.. ATI has taken a gamble with changing the way these cards support game graphics. The result for RIGHT NOW is the drivers are not very good and the games are using the old way are making the card look worse than it actually is.. I wouldn't be surprised if the FPS improves by 25-50% once the drivers are optimized and the new games take advantage of the new, more efficient way.
 

I'mAMac

macrumors 6502a
Aug 28, 2006
786
0
In a Mac box
So far all the tests prove the nvidia card was better then the 2600 pro. Do you think apple will release drivers to fix this? Is the 2600 pro replaceable?
PLEASE! Read the thread 2600xt?. You will be enlightened. I know its extremely long but you'll get it before the end.
 

elcerrito494

macrumors member
Jul 2, 2006
45
0
So far all the tests prove the nvidia card was better then the 2600 pro. Do you think apple will release drivers to fix this? Is the 2600 pro replaceable?
I think that it was cheaper for Apple, and they thought that the iMac wasn't a gaming machine, it was more of a home office/multimedia center PC, and so the graphics didn't need to be top notch.
 

BWhaler

macrumors 68030
Jan 8, 2003
2,864
2,794
Unbelievable move by Apple.

I just hope the driver in x.4.11 and Leopard fix the performance issue. The new iMac has the potential of perfection if it weren't for this scar...
 

cmvsm

macrumors 6502a
Nov 12, 2004
784
0
Don't count on a huge performance increase, even with the Windows driver. The new 2600 poorly lags the old 7600GT with some of yesterday's games, and equals it on some of today's games, even in Windows. Lagging or equaling is not my idea of an upgrade.
If you are doing a lot of rendering, the new card seems to hold its own, but not with gaming.


Check out the Barefeats comparison. They sum it up pretty good.

http://www.barefeats.com/imacal.html
http://www.barefeats.com/imacal2.html
 

RichardI

macrumors 6502a
Feb 21, 2007
569
5
Southern Ontario, Canada
I think Archmagination has it right. Drivers are the key. The 2600 pro is a superior card once the drivers have been optimised.
Comparisons being done now mean very little or nothing, until the 2600 drivers are updated.
Patience grasshopper....:p

Rich :cool:
 

rds

macrumors regular
Aug 9, 2007
148
0
Unbelievable move by Apple.

I just hope the driver in x.4.11 and Leopard fix the performance issue. The new iMac has the potential of perfection if it weren't for this scar...
How dare they do such a thing?!
 

Dont Hurt Me

macrumors 603
Dec 21, 2002
6,071
6
Yahooville S.C.
Really these cards should be compared to the 7300GT since thats what the Macs had in them. 7600GT was a bto option only for the 24". Also Ati's drivers will only get better with time so I think without a doubt these cards are an upgrade but its a shame they didnt still have the GPU upgrade option. Its still a step up from the 7300.
 

Krevnik

macrumors 68040
Sep 8, 2003
3,270
659
All games out now are DX9, this card DX10. If Apple used a DX10 nVidia card, seeing they don't have a mobile card yet, we would still have the same problem.
Actually, they do, and it is in the MBP: The 8600M. But yeah, you are right that DX10-class cards are almost all improvements in the shaders, rather than fillrate or polygon draw rate. Unified shader architecture, more shaders and geometry shaders are the bywords of DX10-class cards.

Plus what is the use to have a DX10 capable card when you need Windows Vista for it anyways!?
DX10-class cards don't /need/ DX10 to work. They work just fine with DX9 (obviously)... and from the standpoint of the card, what level of DX they support only talks to what sort of minimum hardware is on the card. So to be DX10-class, a card must support shader model 4.0, and a couple other minor requirements.

DX10 cards will work with OpenGL 2 just fine, and I believe there is an updated OpenGL spec that supports the geometry shaders. You can tap into as much power of a DX10-class card with OGL 2 as you can with DX10. DX10's big changes are really on how software runs on the CPU, and how the programmer writes to the API. They make it Vista-only for a variety of reasons (which includes marketing and promoting Vista upgrades).
 

AlexisV

macrumors 68000
Mar 12, 2007
1,605
95
Manchester, UK
3D Mark has the Radeon 2600 which is in the iMac at 3500.

The GeForce 7600GT scores in the region of 3500 - 3600.

So to say the new card is a step down is not entirely accurate.