System Configuration CPU: Intel Core i5-760 MB: GIGABYTE P55A-UD3P DRAM: CORSAIR DOMINATOR-GT CMG4GX3M2A2000C8 VGA: ATI Radeon HD 5830 HD: CORSAIR CSSD-F40GB2 Raid0 POWER: be quiet! Straight Power E7 600W Cooler: Mega Shadow Deluxe Edition OS: Windows7 Ultimate 64bit Default Performance CPU 133.2 X 21 => 2797.2MHz DDR3 1331.8 CL5 5-5-15 1T Hyper PI 32M X4 => 13m 31.888s CPUMARK 99=> 515 Nuclearus Multi Core => 16677 Fritz Chess Benchmark => 17.81/8549 CrystalMark 2004R3 => 244848 PCMark Vantage => 14057 Due to Turboost auto OC technology, the clock are not exactly the same in CPU-Z pictures. Basic clock is 2.8GHz, it will floating between 2.8GHz to 3.4GHz by cores and CPU utilized ratio. The performance is higher than Core i5-750 2.66GHz. For the general users, i5-760 performance can handle most software. Power Consumption Test Standby - 67W CPU Full Speed - 135W i5-760 power consumption is impressive without OC, it should be related to enable C1E power saving feature. Also the clock is only 2.8GHz and don’t support HT, the power consumption is pretty low. Especially, even using ATI Radeon HD5830 VGA, the CPU full speed is only 135W. OC Performance First of all, referring to my BIOS set up for 200/2000. BIOS Main Page Set CPU clock to 200MHz and DRAM set up by quality. The ratio in pic shows the DDR3 at 2000MHz. CPU Feature Normally when you are OC, you should disable the C1E features to avoid the voltage and clock floating. Turbo Boost also needs to disable to find the CPU stabilized clock. DDR3 Set Up Page |
After setting the DDR3 clock, the more important is the detail parameters. Starting from CL9, then move to CL8 or higher/lower frequency. Voltage Page Load-Line Calibration CPU Vcore 0.50000~1.90000V QPI/Vtt Voltage 1.050~1.990V PCH Core 0.950~2.000V CPU PLL 1.600~2.540V DRAM Voltage 1.300~2.600V CPU and DRAM quality is varied; you need to adjust the CPU Vcore and DRAM Voltage. If you want to pull CPU frequency to 200/2000 ratio, the key item is QPI/Vtt Voltage. For my experience, when OC to CPU/DRAM 200/2000 performance, QPI/Vtt Voltage is around 1.21~1.25V. PC Health Status There are many P55 products, and every brand has different OC capability. But the set up is similar; you just need to take time for fine tune. Through the steps, every user all can get better CPU/DRMA performance in air cooling condition. Comparing DDR3 Performance before and after OC DDR3 1328.4 CL5 5-5-15 1T Sandra Memory Bandwidth - 16762 MB/s EVEREST Memory Read - 15656 MB/s DDR3 2000 CL8 8-8-24 1T Sandra Memory Bandwidth - 23670 MB/s EVEREST Memory Read - 17941 MB/s DDR3 2060 CL8 8-8-24 1T Sandra Memory Bandwidth - 24301 MB/s EVEREST Memory Read - 18395 MB/s After OC DDR3 1328 to DDR3 2000 performance, EVEREST increases about 15%. Sandra Memory Bandwidth increases more, it’s about 41%. OC DDR3 is really improving the system performance. It can be better with OC CPU together. CPU 200 X 21 => 4199.9MHz DDR3 2000 CL8 8-8-24 1T Hyper PI 32M X4 => 9m 52.146s CPUMARK 99=> 651 Nuclearus Multi Core => 25908 Fritz Chess Benchmark => 25.53/12254 CINEBENCH R11.5 CPU => 5.60 pts CPU(Single Core) => 1.42 pts CrystalMark 2004R3 => 318038 |
PCMark Vantage => 17668 When OC Core i5-760 from 2.8GHz to 4.2GHz, it can pass most benchmark software. Also, due to every software has different CPU utilization and demand, the performance increases 25~50%. If the heat dissipation well, 4~4.2GHz is allowed clock for long time usage. CPU voltage needs 1.42V to OC to 4.2GHz. If you just OC to 4GHz, you need around 1.32V. The voltage set up will be different by every CPU quality. It’s just for your reference only. Power Consumption Test Standby - 158W CPU Full Speed - 285W When OC to 4.2GHz, the CPU performance increase a lot, but the temperature and power consumption is also pulling higher. Also, I disable C1E power saving feature, the power consumption all pull to very high. Intel new revision Core i5-760 OC capability is very good. If you enhance the CPU thermal solution, 4.2GHz is not a hard thing. For the default clock power consumption, it’s almost same as Micro ATX platform. It’s 4 Cores CPU and combo with Radeon HD5830, the system performance is much higher than small form factor PC. If for normal application without OC, this Intel platform is good for performance and power saving. LGA 1156 has been launching for 1.5 years, the mature and wide selections. 32nm built-in GPU, Core i3/i5 CPU. They are all 2C4T structure and support H55/H57 chipset. 45nm Core i5/i7 are 4C4T or 4C8T structure. P55 is mainly supported chipset. P55 spec and OC ability is higher. Even though, LAG 1155 will be launched in next Jan to combo with 32nm 4Cores CPU and P67 chipset, for the market revolution, LGA 1155 MB price will be higher than LGA 1156 a lot. Short term, for the users would like to buy Intel platform, P55 and i5-760 is still the higher C/P Intel 4 Cores CPU platform. I also happy to see the LAG 1156 price can move lower after new platform launched. The users can pay less and get more performance products. :) Last sharing was Canon IXUS 200IS using guide. I just got a FUJIFILM FinePix F80EXR recently. I will find some time to write a experience sharing review. This article is also in my bolg.WIND'S 3C Welcome all friends to visit. |
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