OCZ Platinum PC3-12800 (DDR3-1600) DDR3 2GB Kit
With DDR3 speeds ramping up on an almost weekly basis, It's extremely difficult to obtain two or more memory kits with similar specifications to perform any kind of worthwhile comparison. Therefore, the OCZ Platinum PC3-12800 kit will be reviewed as a standalone product using the hardware specified below.
However, as further DDR3 reviews are added to Overclock3D, any products deemed to be within comparative specifications of this review item will be added to the graphs over the next pages.
|OCZ Platinum PC3-12800|
|Processor||Intel Core2Duo E6850|
|Motherboard||Asus Blitz Extreme (P35)|
|Graphics Card||BFG 8800GTS 640mb OC2 Edition|
|Hard Disk|| Hitachi Deskstar 80GB 7K80 SATA2 7200RPM 8mb |
|CPU Cooling|| Stock Intel Aluminium Cooler|
|Operating System||Microsoft Windows XP (SP2) 32bit - Latest Patches|
|Memory Frequency*||800mhz (DDR2-1600)|
To guarantee a broad range of results, the following benchmark utilities will be used:
• Sisoft Sandra XI SP2 (CPU, Memory & HDD tests)
• Everest Memory Benchmarks
• SuperPI Mod v1.4 (1m and 16m)
• Quake 4
Memory Settings & Overclocking
As with all memory reviews on Overclock3D the Platinum PC3-12800 modules were subjected to a series of benchmark tests under several different configurations. The configurations used tested the memory's ability to run at high frequencies, tight timings and also ensured that that the modules could run with 100% stability at their advertised stock settings.
DDR3-1600 / 7-7-7-20 / 1.90v
By default the E6850 used in this review has a FSB frequency of 333mhz, which even with a 1:2 ratio on the memory falls far short of the stock 800mhz that the Platinum modules are capable of. Therefore, the FSB frequency of the E6850 was raised to 400mhz on a 1:2 divider to run the Platinum kit at exactly 800mhz. The multiplier of the CPU was also dropped from x9 to x8 in order to keep the core speed of the E6850 as close to it's stock 3.0ghz as possible.
After several hours of intense gaming benchmarks coupled with SuperPI and Prime95 stability testing, I'm pleased to say that the OCZ Platinum PC3-12800 kit didn't faulter once, thus showing that the kit is more than capable of running at OCZ's advertised speeds.
DDR3-1804 / 7-7-7-7-20 / 1.95v
Not convinced that this was the maximum obtainable overclock for these modules, I contacted OCZ for assistance who provided me with the following tips for getting the most out of the Platinum kit:
- In the BIOS set the Transaction Booster to relaxed level 3.
- Use 450FSB to enable the DDR3-1800 memory speed divider.
- Try the memory modules in slots A2 and B2.
Instantly I saw massive improvements with the Platinum kit managing a whopping DDR3-1804 (902mhz) at 7-7-7-20 timings, while still staying within OCZ's EVP warranty of 1.95v. This 12% increase in speed is already significantly better than some other DDR3 kits we've tested previously, and we should see some even better figures with the timings loosened.
DDR3-1946 / 8-8-8-25 / 1.95v
Loosening the timings to 8-8-8-25 allowed the modules to be pushed even further with system stability only becoming a limiting factor at DDR3-1960 (just 20mhz short of 1ghz!!). I have no doubts in my mind that by increasing the voltage to 2.0v, we could have easily seen the Platinum PC3-12800 kit hit DDR3-2000 (1000mhz) and possibly even beyond! This is without doubt some seriously overclockable ram.