Maxwell overclocking to depend on manufacturer

Clevo P750ZM comes with desktop CPU.

 

Yes, I'm aware of that, lol. But I thought that the P7x70ZM only had a single GPU slot. How id it running on 2 980Ms?

 

He has a P570WM. Last generation with a desktop CPU was SLI.

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Clevo P570WM ...

 

Ah. Thanks for clearing that up.

 

To be fair john's on Win8.1 while I'm on Win7 Actually I guess if I really wanted to break 20K Firestrike the solution would be as simple as benching on Win8.1 instead

You need to realize one thing: nVidia, after almost 6 months, still hasn't figured out how to get DSR to play nice with GSync and SLI. Actually some owners are still reporting DSR won't work with SLI regardless of GSync or not. It's gotten to the point people have just accepted DSR+GSync+SLI is never going to work period. So you may want to think about that 970 SLI purchase a bit more.

Here's my take on this. If you look at Guru3D's 970 SLI test, you'll see that of all the games they tested, SLI scaling was anywhere from an atrocious 26% (Metro LL) to a best case scenario of 58% (MoH Warfighter). But more importantly, except Crysis 3, a single 980 was able to hit or come close to 60 FPS in every game, even at 1440p with max details. And because you're using a GSync monitor, as long as you stay above 40 FPS you're golden. Yes scaling may have improved with "more mature" drivers but you get the general picture.

Also you're paying $660 for 2x Asus 970. For that price you could get an Asus 980 Matrix for $640, or an EVGA 980 Classified for $690. With both of these non-reference cards, you'll be able to put out some insane overclocks, and you could probably come close to 80% of 970 SLI's performance. Yes you could overclock 970 SLI too; still doesn't take away from the fact that a single top of the line 980 could come close to stock 970 SLI performance.

But just so we're clear, unless you need this desktop RIGHT NOW, I'd personally wait until 390X lands and see how that stacks up.

Asus makes some nice stuff, but their legendarily bad CS always scares me. Personally, I'd only use their mobos and nothing else, but that's just my preference.

And I'm guessing you're buying that particular PSU because it's fanless and platinum? Platinum efficiency carries a small premium, but fanless really tacks on to that. Be aware that particular model only comes with 4x 8pin PCIe connectors, one of which will have to sacrificed to the 8pin EPS for the CPU. So it's definitely not the ideal PSU for a SLI setup. For the same amount of money, you could get the X-850 KM3 850W PSU. Not fanless and "only" gold efficiency, but almost 65% more power than the fanless unit. HardOCP had some good words for it, and noise is of no concern until you go near full load (which won't happen with a single 980 or 970 SLI).