Tech and Talk > Gaming > PC gaming Tech > Very Specific Math-Based PCIe 3.0 Question

reply to Krisnatharok

Re: Very Specific Math-Based PCIe 3.0 Question

Chris, very quick comparison just in my head shows something in line of 15-20%

Is that linear or logarithmic?

linear, based on average of 45-60 good playable FPS, those numbers won't matter all that much, I mean 45 or 48 FPS, does it matter?

26% is ideal scenario. Are you looking into getting a new mobo or GPU? Honestly think either way isnt worth your cash.

I'm upgrading my PC this year. Trying to decide between an LGA 1155/1150 build (PCIe 3.0 x8/x8) or an LGA 2011 build (PCIe 3.0 x16/x16), and adding a second 7970.

26% is a fairly sizeable upgrade. I think I'll go with LGA 2011. The i7-3820 is $230 from Microcenter, which is exactly the same price of an i7-3770K, and only $40 more than an i5-3570K.

I know the motherboard will be more expensive, but I think whatever I pay extra is worth the performance gain.
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Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety.

is your 7970 underperforming now on the 27" you have?

Yes. I get 30-45 FPS average, sometimes dipping under 30 FPS. Keep in mind I tend to play the latest games (Crysis 2, Skyrim w/mods, The Witcher 2, etc.).

1440p is a bitch, even if it is beautiful. If I had to do it again, I'd get a 24" 1080p monitor, working up to three of them. I don't see the added strain on the GPU as worth the extra pixels at 1440p.

There is the chance my i7-920 is starting to be the bottleneck, so I'll probably upgrade the CPU/mobo and see where I stand before buying a second 7970.
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Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety.

Really, interesting. Quick summary of 1440p. I see what you are doing now. Then yes, I will agree with 2011, and most importantly: adding second GPU, that will / should move you into 60-70 FPS territory.
But I would add second 7970 to existing setup and see what happens, I think you will see something close to what you will see with 2011.

Yeah, that's why I caveated my question the way I did, because if not, I'd get some uninformed self-considered "enthusiast" say "durr get a 3770K it's all the CPU you need" (it has already happened on Reddit).

Thanks for the confirmation of what I was thinking, I believe I'll pick up an i7-3820 and an LGA 2011 mobo.

I've never really looked at the x79 mobos, always assumed I'd go the mainstream route with my next build.

Does anyone have any favorites?
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Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety.

reply to Krisnatharok
Linear approximation looks OK. My guess would be that the real curve is sub-linear, as in it ramps up faster as it becomes more of a bottleneck. That makes 26% a worst case IMO it's probably not quite that bad.