6 replies to this topic

[Trubritar]

Clash of the Titans, AMD's HD7970 Vs EVGA's GTX 580 3 GB edition GPU in the ultimate comparison by Trubritar Videos. (Round 4) The HAWX 2 Benchmark. View the video on YouTube

[dirtylarryuk]

Problem is to really get the best from 28nm you need to run 3x screens. if you looks at the benchmarks at 1080p for pretty much 1000 games on steam you need little more than a 460-560 or 6870. A handful fo games like BF3 BC2 Metro Dirt 3 Shogun 2 need a tiny bit more at 1080p and then even a 570 or 6950 is still enough or those in SLi or CF which is cheaper than a 580 in some cases let alone a 7970!

Of course when you move to triple screen or 3d (and getting 3d benchmarks of the 7970 vs 6970 is hard due to AMD lack of 3d support vs Nvidia 3d). Then 28nm jumps up and down on all the past cards very hard. Benchmarks of the 7950 in CF are wicked as your talking 3GB of Vram max 400w power usage and if you OC you can get 7970 ref' performance from the 7950 and lets be honest AMD are cashing in here while there is no competition from Nvidia (because 28nm is cheaper to make than 40nm+) So the real cost we should be paying for 7950 is £250 and 7970 is £350. Both have a 33% price hike right now. As the Nvidia cards fall (580 has started 570 has price crashed) so do the AMD cards.

Hence I have not run and bought one as I don't fancy being mugged for £100 by AMD Plus I want a dual GPU as my mobo is only 8x 8x in CF and that actually does hamper 28nm in CF. So i'm really waiting for 7990 and the 400w and power down of 7970-50 means the next dual card should rock and then some.

The keything from Trubs work and others is the 7970 with minor OC is good enough for pretty much most games in triple head at decent settings and even good for BF3 without AA but really amazing in CF. DX11 is fixed and openCL is 3x faster on 28nm than even the GTX 580 (which is a clue to the Cuda jump expected on kepler) let alone how much faster than the 6970! Nvidia have units I suspect sooner rather than later.

Would i recommend 7970 or 7950 for Triple head "GOD YES" for 1080p 2d when the price drops yes.

As an example:
http://www.scan.co.u...l-link-dvi-i-dp

2x 560 TI 448 (570's with a slight nerf) in SLi are 10% cheaper than a single 7970 and £50 more than 7950 and would beat either in most 2d benchmarks. Ok if you love triple screen they suck and your only real choice right now is 7950-70 for a hefty price permuim. But like many I think the pricing is wrong and I wish nvidia had units out so not only i had a choice but price competition. And hey if nvidia got 28nm out first the story would be the same.

but if you said whats best for BF3 2d on 1080p for FPS for value it isn;t 28nm right now. It is for triple screen not single.

This may change when we see 7870 we shall see as hopefully they will carry 2GB. And the 1.5GB 28nm models may price crash the 570-580 to 400 series levels fast soon.

Edited by dirtylarryuk, 03 February 2012 - 02:52 PM.

[Saijan Prince]

I just picked up a couple of 7950's myself for Crossfire - I had no idea that 8x bandwidth on the PCI-E lanes would bottleneck it, forutnately my board is capable of 16x + 16x + 8x so I am safe.

They run significantly cooler than my Ti's and one heck of a lot faster lol, which to me is a huge generational leap, that a high end product can provide so much better thermal and therefore acoustic efficiciency over a previous generation mid range product. Well done AMD!

I am intending in investing in 3 screens for 3D and eyefinity (using iZ3D drivers) and I cannot wait to get into some simulation gaming with it!

[WestSideBridge]

Saijan Prince, on 24 February 2012 - 01:11 AM, said:

I had no idea that 8x bandwidth on the PCI-E lanes would bottleneck it

Whaaaaaaaaaaaaaaaaaaat? x8 doesn't even bottleneck my QuadSLI 590s.......and now AMD has gone and done it with single GPUs six month later?


Props to the Red Leader --that's all Rogue Sqadron of AMD!

[Saijan Prince]

Yeah I know I was suprised to hear about it as well, but I guess it had to happen at some point right?

[WestSideBridge]

Saijan Prince, on 07 March 2012 - 09:02 PM, said:

Yeah I know I was suprised to hear about it as well, but I guess it had to happen at some point right?

A 590s and 6990s JUST bottlenecked 1.0 X8 six months ago! I'm going to have to get a new board FOR SURE just to get new cards!

That's insanity... Not that I'm complaining, but that's a HUGE jump in PCIe badthwidth usage --more than DOUBLE!

[slamscaper]

AMD's GPU's have always been more sensitive to bandwidth limitations when compared to the green team's offerings.