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Thanks, I will give HyperPI a try! Quote:
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But yes, even better to use a GPU or two with the Core i7 as it doesn't affect performance much. This is partly why I am asking, been having nonstop issues with the GPU client, suspecting the GPU core or compute shaders on my GTX 260 might not stable, but have not been able to prove it. :-/ Could just be more F@H GPU code or CUDA driver issues... Quote:
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B2B : Back to Back Cas 2 delay (think Asus, MSI and now gigabyte biosses got it) Read up here : B2B investigated Massman Style And here : B2B on Gene II HCI Memtest : download here : hci memtest I never went deep into the PPD stuff, but my 285GTX folds about 3-5 cores per nite... my 8 cores on the I7 can't keep up with that ! Maybe the CPU get's other heavier assignments, dunno. Not an expert on the matter |
Ah, I had read that article on Back to Back CAS delay. :) Gigabyte has not released any BIOS's for the EX58-UD5 in months and I could not find a setting for it, was it under a different name? (I see they just released one, will update and check again). Thanks for the links, will download the HCI program and play with it. I'd recommend http://fahmon.net/ Just point it at the GPU directory and the CPU F@H directory to get an idea on your PPD figures... Two Windows SMP clients only fold half as much as four Linux SMP clients, Folding@home code is not optimized very well. Kinda hard to compare cores as the GPU folds quite a few different types, but your GPU should fall between 6,000 to 8,000PPD... same as my Core i7 920. ;) |
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choosing between ~2% "potential" performance increase, or ROCK STABLE, doesn't crash, doesn't bluescreen, always works, always saves data. IS A NO BRAINER :) and to be honest, any Dual Core system at 3ghz is plenty fast for anything you throw at it; the only way at this moment to increase performance noticeably is SSD; that will make a difference; OCing your CPU/VGA/MEM is not worth the risk of an unstable system, for a few % performance increase; In my opinion; to each his/her own :) |
leeghoofd, nice catch! That new just released BIOS does unlock the B2B memory setting... doesn't say what it is set to by default though. I guess I'll be spending a bit of time playing with it. :woot: JMke, you are assuming I was referring to OCing the memory, I am not. Not worth the time, headache, risks involved for the tiny gain. All I am doing is tightening the timings, but I wanted something a bit more accurate than Prime95 Blend to double check my settings. A 1,560Mhz CPU overclock is "not a few % increase" especially when referring to programs that use all four cores / eight threads. :) |
that's why I finished my post with "in my opinion"; I have zero applications which use more than 2 cores, and the apps I do have, few need more than one core. I noticed no real difference between C2D E8200 running at stock vs one overclocked to ~4ghz; running two identical systems, side by side, one overclocked to 4ghz, the other at stock speed; I couldn't tell which one was which until you start up a CPU dependent benchmark. while I agree with you that single threaded performance increases are the way forward to make our systems fasters, we have run into bottlenecks where a faster CPU does no longer overcome the slowdown, "in ye old days" one could overclock a 300mhz CPU to 600Mhz and the difference in overall computing would be night and day. Today, if we take a 2.66ghz CPU to 4ghz, there is an increase in performance... but nowhere near comparable to the past; we have reach a point of diminishing returns; the single biggest factor at this point is storage, make that super speedy and you'll be able to feed that overclocked CPU with data it can actually do something with; your i7 @ 4.2Ghz is a monster, but with normal storage you're throwing peanuts at it, by switching to SSD/ramdisk you'll be providing it with a real meal and the outcome will be an eye opener. |
Well it sounds like we mostly agree, even I can't notice if my system is at stock or if it is partly overclocked unless I start up an intensive program or several programs at once. With things like VMWare and its four virtual machines I easily notice the smoother loading and responsiveness between stock and overclocked states. Game levels also tend to load faster even with a basic HDD, oddly I'm usually the first to load in 24 player TF2 servers or 8 player L4D games, but not more disk intensive games. Folding@home is only minimally (at best) affected by disk performance and to a slightly larger extent RAM performance, it's almost completely CPU / GPU bound. That said an SSD upgrade has been on my list for that very reason, I've just been waiting for the new G2's to be stocked so I can get one for 20% off with Bing cashback. In any case, a system is only as fast as it's slowest bottleneck. It wouldn't make much sense to buy an SSD for a Pentium 4, or a system with 1GB of RAM. Just been waiting for the new 2nd gen drives and some price cuts. :) --- I'll post what I found about Gigabyte's B2B in the appropriate thread. Memtest HCI seems to be stuck at a 2GB limit so three instances must be run simultaneously for it to work. I don't understand what Wprime does that Superpi and Hyperpi don't already? |
Wprime stresses all cores as you can manually set the number of threads. |
So does Hyperpi :) Wprime is more of a raw CPU test, while Hyperpi and co stresses the rams and IMC more... HCI memtest is limited inmax ram usage (think it's just the freeware edition) so yes I run several instances too and even attribute affinity for the cores... you run 2 2048 ones and one with rest of the unused memory ( auto ) |
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