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6950 or 5850 CF

Last response: in Graphics & Displays
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December 15, 2010 1:53:15 PM

As I had said in my last thread,I'm looking to upgrade my gpu.
My specs are :
Cm 690
i5 750 stock(3.6ghz when I get a cooler)
4gb ddr3
Asus p7p55d
Saphhire 5850
corsair tx750w

The only reason I'm not going for the second 5850 is the x4 slot on my mobo.This will bottleneck a second 5850 but I believe(considering the 6950's performance) it will surpass the single card solution.I believe the performance will equal a gtx 480 on games that are affected by the lack of bandwidth (mw2) and the performance of a 5970 at more demanding games like crysis and metro 2033.These are based on the benchmarks by TH here with a gtx 480 and as a result,are a bit pessimistic.Considering this,I would be more than pleased with their performance.
On the other hand,by going the single card way,I'd have 10-20% less performance,but I would avoid the bad points of CF.
Keep in mind that the 6950 option will cost me approximately 130$ more(100 euros).
Which way should I go?

More about : 6950 5850

a c 169 U Graphics card
December 15, 2010 2:32:24 PM

For PCI-E 1.0 cards,the difference between dual x8/x16 with x16x4 was significant but that's not the case with PCI-E 2.0 cards.The difference isn't huge so get another 5850.You'll get roughly the same performance of 5970.
December 15, 2010 2:46:25 PM

Maziar said:
For PCI-E 1.0 cards,the difference between dual x8/x16 with x16x4 was significant but that's not the case with PCI-E 2.0 cards.The difference isn't huge so get another 5850.You'll get roughly the same performance of 5970.


Thanks Maziar.I've seen the article with this difference in pci e 1.0 cards .
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December 15, 2010 2:57:24 PM

I'm in the exact same boat. I have a 5850 with pci 1.0 mobo. I just recently purchased a 2nd 5850 card and I'm not sure if I"m going to have buyer's remorse on this over getting say, a gtx570 and ebaying my 5850. However, I'm building a new computer in janurary with sandy bridge so i shouldn't lose too much sleep over it.
December 15, 2010 3:44:15 PM

Debeucci said:
I'm in the exact same boat. I have a 5850 with pci 1.0 mobo. I just recently purchased a 2nd 5850 card and I'm not sure if I"m going to have buyer's remorse on this over getting say, a gtx570 and ebaying my 5850. However, I'm building a new computer in janurary with sandy bridge so i shouldn't lose too much sleep over it.


Would you mind sharing 1 or 2 benchmark results,say 3dmark11 and unigine heaven.Just for the graphics score.
December 15, 2010 3:49:55 PM

why not just stick with your current rig or get a gtx 570 because 69xx is not worth a penny to buy! if you concern about heat and power consumption than wait until gtx 560 in january! dont go for 6950! or 6970 it's junk
a c 169 U Graphics card
December 15, 2010 4:42:06 PM

Here is a review of GTX 480 SLI in dual x16 vs dual x4 speed(which is even slower than x16x4)
http://www.hardocp.com/article/2010/08/25/gtx_480_sli_p...
"The results are actually a bit shocking to us to be honest. We weren’t so surprised that in the previous evaluation x8/x8 did not cause any differences at 2560x1600 but did at 5760x1200. However, we thought certainly at x4/x4 PCIe 2.0 mode there would be some kind of a bottleneck at 2560x1600, but the results have proven otherwise. Even with all the data that GTX 480 SLI is pushing across the PCIe bus, x4/x4 is NOT a bottleneck in a single display setup at 2560x1600 with AA enabled. The only game to show us any difference was AvP, but it did not affect the gameplay experience. Therefore, if you are on an aging PCIe 1.X system at x8/x8 mode (equivalent to PCIe 2.0 x4/x4) on a single display fear not, you are not holding back the performance of GTX 480 SLI or we guess with any CrossFireX or SLI configuration."

Hope it helps
December 15, 2010 7:10:42 PM

I've seen that bench,but unfortunately higher resolutions seem to make the bottleneck from the slots less apparent.The only way to be sure would be to see 1200P or 1080p results.Seeing this though,I doubt the 5850s require more bandwidth compared to the gtx 480s.Well if I get the 5850s I'll be sure to bench them and share my findings at both 1920x1080 and 1680x1050:) 
a c 169 U Graphics card
December 15, 2010 8:14:47 PM

Don't worry,1200p/1080p results will be pretty much the same as 2560x1600.
I'm waiting for your benchies though :D 
December 15, 2010 8:20:32 PM

BeCoolBro said:
I've seen that bench,but unfortunately higher resolutions seem to make the bottleneck from the slots less apparent.The only way to be sure would be to see 1200P or 1080p results.Seeing this though,I doubt the 5850s require more bandwidth compared to the gtx 480s.Well if I get the 5850s I'll be sure to bench them and share my findings at both 1920x1080 and 1680x1050:) 


any setting that runs on 6850 will be way better than crossfire 5770. just get one of them or get gtx 460

gtx 460 1gb $179

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

6850 1gb $179

http://www.newegg.com/Product/Product.aspx?Item=N82E168...
!