EPTStarCraft 2 and CPU Overclocking - Page 2
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y0su
Finland7871 Posts
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c0ldfusion
United States8293 Posts
On August 17 2012 20:55 Unibrow88 wrote: Thats why I'm really happy with my Core2Duo E8400 :D You're still bottlenecked by that CPU, especially when there's lots of units in game. | ||
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caradoc
Canada3022 Posts
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tehemperorer
United States2183 Posts
On August 18 2012 00:40 caradoc wrote: Could the fps increase from running 3 cores be due to background processes utilizing the third, thus saving CPU time on the two for sc2? I'm sure background processes will still use all cores unless affinity is specified. | ||
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MyLastSerenade
Germany710 Posts
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AssuredVacancy
United States1167 Posts
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[N3O]r3d33m3r
Germany674 Posts
On August 17 2012 19:14 Unibrow88 wrote: Core2Duo ~3.6GHz > QuadCore ~3GHz? Most games don't use 4 cores really good, SC2 the same? where did you get that crap from? that was 3 years ago, no matter how many cores are used, a quadcore is much faster than shitty old e8400. the majority of games nowadays use quadcore  | ||
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Aerisky
United States12129 Posts
 Some of it is contradictory so maybe...? | ||
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R1CH
Netherlands10343 Posts
3300 MHz: Avg: 41.925 - Min: 27 - Max: 58 3700 MHz: Avg: 46.625 - Min: 32 - Max: 63 4400 MHz: Avg: 56.025 - Min: 39 - Max: 77 | ||
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UmbraaeternuS
Chile476 Posts
I tested the very same setups on my rig: Intel i7 2600k, cooled by a Corsair H80 Motherboard MSI Z68A-GD55 (G3) 8GB RAM XFX Radeon HD 7850 2GB x2 @ Crossfire Got nearly the same results as you. Selecting cores for each process (Cores 0 and 1 for SC2 and 4-7 for XSplit) gets a slight improvement, at around 3-5FPS each. The only issue will be the temperature in the CPU under those loads, haven't tested that... It will be interesting to see the diferences. Very, very good read. | ||
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vaderseven
United States2556 Posts
Is there an easy way to set my memory to be dual to test? (experienced OC'er but too lazy too look that up  )I can confirm the results (at least support them), My setup: i7 920 c0 stepping 12 gigs of 1600mhz ram (gskill sniper) (3 sticks) SSD on Sata 3 Nvidia GTX 560 In order to max out my 120 fps I have to adjust some settings in sc2 down and have a min clock of 3.6ghz. If I am below 3.6ghz it doesnt matter what settings I use, I will hit below 120 fps when max armies in a 1v1 occur. Wish I had my notebook where I tested it all cuz I did just that last xmas when I got my monitor. | ||
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CatNzHat
United States1599 Posts
On August 18 2012 14:58 vaderseven wrote: How would tri-channel ram (i7 920 ftw?) effect things, any ideas? Is there an easy way to set my memory to be dual to test? (experienced OC'er but too lazy too look that up )I can confirm the results (at least support them), My setup: i7 920 c0 stepping 12 gigs of 1600mhz ram (gskill sniper) (3 sticks) SSD on Sata 3 Nvidia GTX 560 In order to max out my 120 fps I have to adjust some settings in sc2 down and have a min clock of 3.6ghz. If I am below 3.6ghz it doesnt matter what settings I use, I will hit below 120 fps when max armies in a 1v1 occur. Wish I had my notebook where I tested it all cuz I did just that last xmas when I got my monitor. The x58 Chipset is tri channel memory, most motherboards are setup so that the RAM should be installed in every other slot, starting with the furthest slot from the CPU socket. If you pull up CPU-Z you should be able to see if you're running in triple channel mode or not. I would also look into getting an after market cooler like the Corsair H70 or 120, as that should allow you to push past 4.0Ghz pretty easily, I'm stable at 4.4Ghz on an H70 (however I have a D0 chip). Edit: I think I misunderstood your question, if you're asking how much of a performance gain you get by utilizing tri channel RAM as opposed to single or dual channel, then the answer is not much. Unless you're streaming there isn't a whole lot of texture loading and unloading to be done in SC2 (as far as I know), which would mean memory bandwidth is unlikely to ever bottleneck your performance. Streaming, however, is a different story, and most likely would be significantly impacted if memory bandwidth were limited. | ||
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Medrea
10003 Posts
Its just that SC2 threads arent half sized so the entire physical core gets used. Hyperthreading is merely putting two instructions on the same CPU if they both can fit. On August 18 2012 00:40 caradoc wrote: Could the fps increase from running 3 cores be due to background processes utilizing the third, thus saving CPU time on the two for sc2? Yes thats exactly correct. Sc2 only uses 2 threads. So one core for everything else on the system will yield a measurable performance gain. In fact so will a 4th core but the impact is 5 percent of that previous 5 percent. And then a fifth core would be 5 percent of 5 percent of 5 percent and so on. So for AMD octo cores. That 8th core is giving you a fraction of a fraction of a fraction of a fraction of a fraction of a fraction of an amount of performance increase. | ||
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Mattchew
United States5684 Posts
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Skeggaba
Korea (South)1556 Posts
On a side note: Maybe you could get the TL Knowhow section going? | ||
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fds
Slovenia258 Posts
I think to complete this experiment it would be great to test stability of overclocked CPU as well. Maybe use prime or similar program to confirm overclocked CPU stability. | ||
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ZeroTalent
United States297 Posts
On August 17 2012 12:25 R1CH wrote: As part of this experiment, I was also investigating how many threads SC2 is able to take advantage of. It's clear that two cores is a huge improvement, but three cores also offered a very small (5 FPS) increase over just two cores. Also of note, it appears SC2 has its own logic that disables use of hyperthreaded CPU cores so that two threads won't get scheduled to the same physical CPU. In combination with xsplit or other CPU intensive programs running on an i7, you could achieve better core throughput by making sure that nothing else is using the same physical CPU cores as SC2 (eg assign Core 0 and Core 2 to SC2 and make sure xsplit isn't using Core 0,1,2,3). Manually setting affinity only seems to provide a performance boost when hyperthreading is enabled, I was unable to measure any difference on my i5. So: what are the recommended affinity settings on an i7 for streamers? Let SC2 do what it wants (which on startup for mis to always have affinity on 0,2,4,6) and give XSplit affinity for cores 4-7? EDIT: and should I do the same thing with VHMultiWriter.exe (one of XSplit's child processses)? | ||
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cari-kira
Germany655 Posts
as your results show, the more load is on the cpu, the more it benefits from the oc. so in 4v4 lategames with even less fps the difference should be the biggest. while you're at it it would be nice if you could test this too... plsss...;-) | ||
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[N3O]r3d33m3r
Germany674 Posts
On August 20 2012 07:22 cari-kira wrote: as a player who plays most of the times 4v4 with friends i am curious about the fps increases in 4v4 maxed out scenarios. as your results show, the more load is on the cpu, the more it benefits from the oc. so in 4v4 lategames with even less fps the difference should be the biggest. while you're at it it would be nice if you could test this too... plsss...;-) i don't think so tbh. Why? because the framerate is quite low already, the higher you go (maxed out settings at 4vs4) the less frames you get, and it's harder to compare for example 24 vs 25 frames than 52 to 66 frames per second  | ||
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Gandalf
Pakistan1905 Posts
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