Ivy Bridge HD 7970 and GTX 680 PCI-Express Scaling

W1zzard · Apr 29, 2012, 11:12 AM

To read this review go to: http://www.techpowerup.com/reviews/I...press_Scaling/

kroks · May 7, 2012, 09:10 AM

Why don't you test SLI/Crossfire?

They require more bandwight from PCIe and you can see real difference between PCIe 3.0 and 2.0 in big resolution like 5760x1080

W1zzard · May 7, 2012, 09:25 AM

Quote:

Originally Posted by kroks

Why don't you test SLI/Crossfire?

They require more bandwight from PCIe and you can see real difference between PCIe 3.0 and 2.0 in big resolution like 5760x1080

we'll see about that. given the data in this article i seriously doubt higher resolution in multi gpu will need more bandwidth.

i'm planning to do multi gpu testing once hd 7990 is out (using 680 sli, 690, 7970 cf, 7990)

multi-gpu is only a minority of users so i thought it would be more useful to test single card first

jaredpace · May 7, 2012, 09:33 AM

needs cfx/sli

repman244 · May 7, 2012, 09:35 AM

What about compute benchmarks? I saw a couple that showed quite a big difference between PCI-E 2.0 16x and PCI-E 3.0 16x.

FreedomEclipse · May 7, 2012, 10:31 AM

I always thought the whole PCI-Ex 3.0 'double the bandwidth' thing was more of a gimmick just to sell more boards then anything else.

Oh well.... since IB is not such a big leap in performance from SB and PCI-E 3.0 being nothing but a waste of time, theres really no reason to upgrade to IB from a decent SB set up and this review just proves it.

raptori · May 7, 2012, 10:31 AM

does GTX690 on PCI-E 2.0 x8 will be similar like 2 GTX680 each on 2.0 x4? ,assume performance of GTX690=2x GTX680 in SLI

ifkopifko · May 7, 2012, 10:31 AM

Thanks for the review. Would it be possible to test minimum frame rates (drops) in the next article about scaling with interface speed? Thanks.

Mech0z · May 7, 2012, 10:41 AM

Would be nice if you could add x1 performance as well (Maybe just a few of them) at http://forum.notebookreview.com/gami...periences.html we are interested in x1 performance until Thunderbolt gear is ready for external GPUs for our laptops

nothappy · May 7, 2012, 10:41 AM

Thank you for the hard work, it sure is a hassle to test it in detail.

Hayder_Master · May 7, 2012, 10:51 AM

this is really great review wizzard

Yellow&Nerdy? · May 7, 2012, 11:00 AM

Just goes out to show that PCIe 3.0 is pure marketing. Maybe it'll have more of a difference when you run quad-SLI/Xfire with 8x/8x on PCIe 2.0 vs. PCIe 3.0.

Mech0z · May 7, 2012, 11:04 AM

Quote:

Originally Posted by Yellow&Nerdy?

Just goes out to show that PCIe 3.0 is pure marketing. Maybe it'll have more of a difference when you run quad-SLI/Xfire with 8x/8x on PCIe 2.0 vs. PCIe 3.0.

It will be usefull, not now, but later and would you rather have it beforehand or have to wait for it and therefore limiting your GPU? Another field that will benefit is PCIe based SSD cards, these are growing massively in speed

Dj-ElectriC · May 7, 2012, 11:04 AM

This review proves once again, AMD>NVIDIA when it comes to lower PCIE bandwidth

Fourstaff · May 7, 2012, 11:13 AM

Quote:

Originally Posted by FreedomEclipse

I always thought the whole PCI-Ex 3.0 'double the bandwidth' thing was more of a gimmick just to sell more boards then anything else.

Oh well.... since IB is not such a big leap in performance from SB and PCI-E 3.0 being nothing but a waste of time, theres really no reason to upgrade to IB from a decent SB set up and this review just proves it.

Quote:

Originally Posted by Yellow&Nerdy?

Just goes out to show that PCIe 3.0 is pure marketing. Maybe it'll have more of a difference when you run quad-SLI/Xfire with 8x/8x on PCIe 2.0 vs. PCIe 3.0.

I wonder why you guys think its pure marketing gimmick, it delivered on its promise to double bandwidth. Psersonally I would rather them release 3.0 before we hit a bottleneck on the 2.0 (and thus showing you no performance advantage right now between the two) rather than wait until 2.0 becomes a bottleneck before making 3.0 a standard (where they actually show a difference between the two during launch day). They can release it slightly later, so people will not feel "cheated" but why release something tommorow when you can do it today?

Fatal · May 7, 2012, 11:16 AM

Outstanding review W1zz!

I don't think people understand how much time you spend on your reviews. Hell reviewing one card would be a pain in the ass

Seems like 3.0 is not worth the worry at all.

Mathragh · May 7, 2012, 11:31 AM

Excellent review, greatly appreciated!

Yellow&Nerdy? · May 7, 2012, 11:43 AM

Quote:

Originally Posted by Mech0z

It will be usefull, not now, but later and would you rather have it beforehand or have to wait for it and therefore limiting your GPU? Another field that will benefit is PCIe based SSD cards, these are growing massively in speed

No one can afford those, so it's pretty irrelevant.

Completely Bonkers · May 7, 2012, 11:51 AM

Quote:

Originally Posted by FreedomEclipse

I always thought the whole PCI-Ex 3.0 'double the bandwidth' thing was more of a gimmick just to sell more boards then anything else.

There is another way to look at it... PCIe 3.0 means you can ditch x16 slots. We can start making cheaper MBs, cheaper sockets, and cheaper GPUs by only needing x4 or x8.

For mainstream, 3.0 x4 is all that is needed. For enthusiast, 3.0 x8 is more than enough. The extra 1% performance for x8 to x16 is far outclassed by the next GPU upgrade, or a better CPU etc.

W1zzard · May 7, 2012, 11:53 AM

Quote:

Originally Posted by ifkopifko

Thanks for the review. Would it be possible to test minimum frame rates (drops) in the next article about scaling with interface speed? Thanks.

no, sorry

Quote:

Originally Posted by repman244

What about compute benchmarks? I saw a couple that showed quite a big difference between PCI-E 2.0 16x and PCI-E 3.0 16x.

gpu compute seems to be a waste of time. video encoders have laughable quality. are there any other applications that anyone uses?

Jurassic1024 · May 7, 2012, 12:53 PM

Some seriously questionable comments made here.
AMD performs better at the new spec than nVIDIA.
PCIe 3.0 is marketing.
Make boards with x8 instead of x16 to save money on motherboards and because PCIe 3.0 isn't saturated.

Smh

Mussels · May 7, 2012, 12:54 PM

Quote:

"My motherboard supports only x8 for multiple cards, will performance suck?"

love it. everything else seems professional until that crops up.

BigMack70 · May 7, 2012, 12:54 PM

Amazing review to have - thanks!

Good to know that PCI-e 3.0 is just for future tech or for crazy multi-card configs on non-enthusiast motherboards right now.

badtaylorx · May 7, 2012, 01:06 PM

wow....what a joke....seems like a real difference is still years away....i cant believe the pcie 1.1 numbers....holy shit

achk · May 7, 2012, 01:16 PM

2000 individual test awesome

i think it will be useful later

Apr 29, 2012, 11:12 AM	#1
W1zzard Benevolent Dictator Join Date: May 2004 Location: Stuttgart, Germany Posts: 13,758 (4.18/day) Thanks: 184 Thanked 10,208 Times in 3,157 Posts System Specs	Ivy Bridge HD 7970 and GTX 680 PCI-Express Scaling To read this review go to: http://www.techpowerup.com/reviews/I...press_Scaling/ Last edited by W1zzard; May 7, 2012 at 07:04 PM.

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May 7, 2012, 09:33 AM	#4
jaredpace Join Date: Sep 2009 Posts: 160 (0.12/day) Thanks: 68 Thanked 65 Times in 30 Posts	needs cfx/sli __________________ “I would like for him to point out and quote specifically the portion of both pics that shows a bart as a 6800 series...” -EastCoasthandle

May 7, 2012, 09:35 AM	#5
repman244 Join Date: Apr 2011 Posts: 964 (1.25/day) Thanks: 225 Thanked 411 Times in 236 Posts System Specs	What about compute benchmarks? I saw a couple that showed quite a big difference between PCI-E 2.0 16x and PCI-E 3.0 16x. __________________ Storage server: HP Proliant ML350 G4\|2 x Xeon "Nocona" 3GHz\|4GB DDR1 ECC\|Storage (SCSI): 3x10k 72GB + 10k 300GB + 15k 300GB + Ultrium460 tape drive\|Storage (SATA): Adaptec 2810SA + WD Caviar 250GB + Seagate 250GB\| Other: HP Proliant DL380 G5\|Xeon 5150\|4GB FB DDR2 ECC\|HP Smart Array P400-256MB cache\|3x10k 146GB SAS in RAID 0 + 10k 146GB SAS\|2x800W\|ATi FireGL V7700\| HP Proliant DL320 G5\|Xeon 3150\|1GB FB DDR2 ECC\|2x80GB RAID 0

May 7, 2012, 09:10 AM	#2
kroks Join Date: May 2011 Posts: 23 (0.03/day) Thanks: 2 Thanked 1 Time in 1 Post	Why don't you test SLI/Crossfire? They require more bandwight from PCIe and you can see real difference between PCIe 3.0 and 2.0 in big resolution like 5760x1080

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May 7, 2012, 10:31 AM	#6
FreedomEclipse Crazy Dogmatic Bullsh!t! Join Date: Apr 2007 Location: (British Born Chinese) London, United Kingdom Posts: 7,519 (3.38/day) Thanks: 824 Thanked 1,603 Times in 1,283 Posts System Specs	I always thought the whole PCI-Ex 3.0 'double the bandwidth' thing was more of a gimmick just to sell more boards then anything else. Oh well.... since IB is not such a big leap in performance from SB and PCI-E 3.0 being nothing but a waste of time, theres really no reason to upgrade to IB from a decent SB set up and this review just proves it. __________________ “I used to be a serial upgrader like you, then i took a downgrade to the knee” -FreedomEclipse

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May 7, 2012, 10:31 AM	#7
raptori Join Date: Mar 2008 Location: Baghdad,Iraq Posts: 506 (0.27/day) Thanks: 58 Thanked 62 Times in 46 Posts System Specs	does GTX690 on PCI-E 2.0 x8 will be similar like 2 GTX680 each on 2.0 x4? ,assume performance of GTX690=2x GTX680 in SLI

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May 7, 2012, 10:31 AM	#8
ifkopifko Join Date: Nov 2008 Location: Bratislava, Slovakia Posts: 7 (0.00/day) Thanks: 0 Thanked 0 Times in 0 Posts	Thanks for the review. Would it be possible to test minimum frame rates (drops) in the next article about scaling with interface speed? Thanks.

May 7, 2012, 10:41 AM	#9
Mech0z Join Date: May 2012 Posts: 3 (0.01/day) Thanks: 0 Thanked 0 Times in 0 Posts	Would be nice if you could add x1 performance as well (Maybe just a few of them) at http://forum.notebookreview.com/gami...periences.html we are interested in x1 performance until Thunderbolt gear is ready for external GPUs for our laptops

May 7, 2012, 10:41 AM	#10
nothappy Join Date: Sep 2011 Location: The nightmare called reality (Jakarta, Indonesia) Posts: 29 (0.05/day) Thanks: 6 Thanked 5 Times in 5 Posts System Specs	Thank you for the hard work, it sure is a hassle to test it in detail.

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May 7, 2012, 10:51 AM	#11
Hayder_Master Join Date: Apr 2008 Location: IRAQ-Baghdad Posts: 4,860 (2.62/day) Thanks: 388 Thanked 639 Times in 444 Posts System Specs	this is really great review wizzard __________________ Easiest way to overclock the graphic card guide Easiest way to overclock your graphic card , my other overclocking threads , Core i7-1156 Overclocking and Feedback Thread , C2Q overclocking and feedback thread , C2QX overclocking and feedback thread ,C2D overclocking and feedback thread ,AMDX2 overclocking and feedback thread

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May 7, 2012, 11:00 AM	#12
Yellow&Nerdy? Join Date: Oct 2009 Location: Denmark Posts: 307 (0.23/day) Thanks: 61 Thanked 42 Times in 21 Posts System Specs	Just goes out to show that PCIe 3.0 is pure marketing. Maybe it'll have more of a difference when you run quad-SLI/Xfire with 8x/8x on PCIe 2.0 vs. PCIe 3.0.

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May 7, 2012, 11:04 AM	#14
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May 7, 2012, 11:16 AM	#16
Fatal Join Date: Jan 2009 Location: Golden, Colorado Posts: 575 (0.36/day) Thanks: 222 Thanked 112 Times in 96 Posts System Specs	Outstanding review W1zz! I don't think people understand how much time you spend on your reviews. Hell reviewing one card would be a pain in the ass Seems like 3.0 is not worth the worry at all. __________________

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May 7, 2012, 11:31 AM	#17
Mathragh Join Date: Dec 2009 Location: The Netherlands Posts: 646 (0.51/day) Thanks: 156 Thanked 198 Times in 147 Posts System Specs	Excellent review, greatly appreciated!

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May 7, 2012, 12:53 PM	#21
Jurassic1024 Join Date: Mar 2012 Posts: 162 (0.37/day) Thanks: 4 Thanked 21 Times in 15 Posts System Specs	Some seriously questionable comments made here. AMD performs better at the new spec than nVIDIA. PCIe 3.0 is marketing. Make boards with x8 instead of x16 to save money on motherboards and because PCIe 3.0 isn't saturated. Smh

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May 7, 2012, 12:54 PM	#23
BigMack70 Join Date: Mar 2012 Posts: 382 (0.90/day) Thanks: 65 Thanked 84 Times in 51 Posts System Specs	Amazing review to have - thanks! Good to know that PCI-e 3.0 is just for future tech or for crazy multi-card configs on non-enthusiast motherboards right now.

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May 7, 2012, 01:06 PM	#24
badtaylorx Join Date: Aug 2011 Posts: 369 (0.58/day) Thanks: 25 Thanked 131 Times in 45 Posts System Specs	wow....what a joke....seems like a real difference is still years away....i cant believe the pcie 1.1 numbers....holy shit

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May 7, 2012, 01:16 PM	#25
achk Join Date: May 2012 Posts: 1 (0.00/day) Thanks: 0 Thanked 0 Times in 0 Posts	2000 individual test awesome i think it will be useful later