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4890 CF or 5870

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November 14, 2009 6:41:26 PM

Hello
I have the choice between a 4890 CF configuration or a single 5870. What would be the most performant with a i7 920, a 850 watt PSU and 4 gigs of 1600 ram?
Thanks

More about : 4890 5870

a c 91 U Graphics card
November 14, 2009 6:49:48 PM

Personally I would chose the 5870. It's one step closer to DX11 and I've seen DX11 and it is good. If you think what you have now is nice, wait til stuff starts popping out in a more 3d way without having to have the high end monitor and glasses.
November 14, 2009 6:52:26 PM

ty dude
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a b U Graphics card
November 14, 2009 7:05:39 PM

Two HD 4890s offer probably up to around 25% more performance than a single HD 5870. However, they will use more power, put out more heat, and only support DirectX 10.1 instead of the HD 5870s DirectX 11. Also, it will require a CrossFire compatible motherboard and solid (80 PLUS certified, Active PFC) power supply. A caveat is that they cost the same or less in most cases and there is no problem with availability.

Put simply, the HD 4890s will provide the better performance, but will lack some features and advancements in games we will see with the introduction of DirectX 11. Unfortunately I couldn't find any HD 4890 CrossFire vs. HD 5870 articles, but you can compare these two for performance differences:

techPowerUp :: AMD Radeon HD 4890 CrossFire Review
techPowerUp :: AMD Radeon HD 5870 1 GB GDDR5 Review

Some excerpts:

Quote:
Resolution: 1920x1200

Crysis (4xAA)

HD4890CF -- 36.0 FPS
HD5870 -- 31.7 FPS

STALKER: Clear Sky (16xAF)

HD4890CF -- 54.8 FPS
HD5870 -- 44.1 FPS

World in Conflict (4xAA, 16xAF)

HD4890CF -- 83.0 FPS
HD5870 -- 54.0 FPS


Also, please note some disparities in the test setup configurations because of the difference in dates in which the tests were performed. The HD 4890 CF setup is using Windows Vista SP1 while the HD 5870 is using Vista SP2. The HD 4890 CF setup is using 2GB of slower DDR3 RAM; the HD 5870 is using 6GB of faster DDR3 RAM. HD 4890 performance has also increased with newer driver updates.
November 14, 2009 7:11:11 PM

I'd say 4890 CF. Why? Because you can't buy a 5870 today.
November 14, 2009 7:21:58 PM

actually, you can....
November 14, 2009 7:22:13 PM

look on tigerdirect for yourself
November 14, 2009 7:23:36 PM

brockh said:
Two HD 4890s offer probably up to around 25% more performance than a single HD 5870. However, they will use more power, put out more heat, and only support DirectX 10.1 instead of the HD 5870s DirectX 11. Also, it will require a CrossFire compatible motherboard and solid (80 PLUS certified, Active PFC) power supply. A caveat is that they cost the same or less in most cases and there is no problem with availability.

Put simply, the HD 4890s will provide the better performance, but will lack some features and advancements in games we will see with the introduction of DirectX 11. Unfortunately I couldn't find any HD 4890 CrossFire vs. HD 5870 articles, but you can compare these two for performance differences:

techPowerUp :: AMD Radeon HD 4890 CrossFire Review
techPowerUp :: AMD Radeon HD 5870 1 GB GDDR5 Review

Some excerpts:

Quote:
Resolution: 1920x1200

Crysis (4xAA)


HD4890CF -- 36.0 FPS
HD5870 -- 31.7 FPS

STALKER: Clear Sky (16xAF)

HD4890CF -- 54.8 FPS
HD5870 -- 44.1 FPS

World in Conflict (4xAA, 16xAF)

HD4890CF -- 83.0 FPS
HD 5870 -- 54.0 FPS


Also, please note some disparities in the test setup configurations because of the difference in dates in which the tests were performed. The HD 4890 CF setup is using Windows Vista SP1 while the HD 5870 is using Vista SP2. The HD 4890 CF setup is using 2GB of slower DDR3 RAM; the HD 5870 is using 6GB of faster DDR3 RAM. HD 4890 performance has also increased with newer driver updates.


and is my PSU good enough?
a b U Graphics card
November 14, 2009 7:26:27 PM

dadude941 said:
and is my PSU good enough?


Yes, your 850W power supply is fine. In the HD 4890 CF article they used an 800W power supply. Make sure you're using Windows Vista or Windows 7 x64. I just realized the reason why they used 2GB of memory in the HD 4890 CF article is because in the x86 version of Vista/7 the 2GB of video memory allocated to the two HD 4890s takes up the 2GB of the 4GB of memory space allocated in 32-bit operating systems meaning the largest amount of memory available to the actual user space is 2GB (if not a little less). User space memory less than 4GB has shown to decrease performance by up to 10% by itself.
November 14, 2009 9:46:51 PM

XFX Radeon HD5870 are out wordwide! Nice marketing plan...kinda of like "Now that we have there attention!!"
November 14, 2009 10:06:36 PM

kenestra1 said:
XFX Radeon HD5870 are out wordwide! Nice marketing plan...kinda of like "Now that we have there attention!!"


Sell all you can make at top dollar, sounds like a good plan to me.
November 15, 2009 5:58:10 AM

MARSOC_Operator said:
For 400 Euros? No thanks.

Prices are much higher in Europe than in the states
Anonymous
a b U Graphics card
February 1, 2010 3:11:08 PM

Got XFX 4890 CF on 2048x1536
WOW. Really impressed! Crysis x64 - all "Very High"
the power consumption by both combined goes to 400W but game is SMOOTH.
Dreiver is great.
Had NVIDIA before - dirvers are totall garbage - just like performance/price ratio.
Love AMD/ATI
if only they could come up with nTune line tool.
the one they offer now is too basic. like it goes by FSB frequency only...
would be smarter to try all memory timings like nTune does.

tigerdirect has them on sale now - $200 each, free shipping = $400 VS single 5870 - $450

both 1600 proc units
2GB DDR5 vs 1GB
32 PCI lines vs 16
4 monitors (for other then games) instead of 2
about 30% more performance


4890 CF
790FX
4GB DDR2 1066
Phen. x4 985
a b U Graphics card
February 1, 2010 3:39:30 PM

4890 CrossFire are the only cards that can run maximized CRYSIS at maximum resolution
a c 189 U Graphics card
February 1, 2010 3:54:29 PM

Maybe just wait for a while...
4890 is an old tech and power hungry card.
I think it will be more efficient if he use a new tech, less heat, less power consumption, and dx11.
well, that's just my opinion.... :) 
!