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Aeneon DDR2-1066MHz and DDR3-1333MHz 2GB Kits
DDR3: CL7, CL8 and CL9 overclocking
Written by tUx and filed under Reviews > Memories
Published on December 10, 2007, 6:00 pm
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1.90V was fed to the pair of DDR3 for today's overclocking.
Clock speed does scale pretty linearly with voltage increase, but it stops abruptly at 1.90V. No improvement was seen when 2.0V was pumped in. We stopped trying at 2.1V. The memory could POST at any voltage we put it through, unlike the DDR2 kit which had a certain limit of Vdimm.
Like the DDR2 kit, we had a 70mm fan blowing over the memory kit and the northbridge to keep temperatures low.
We start the day of with a slightly tight CL7 setting.
Only 650MHz (1300MHz) for this pair of memory at 7-7-7-. The system would POST at a little bit more to 660MHz, but Windows would not be able to load.
Let us now try CL8.
We were able to get a decent 730MHz (1460MHz DDR) for 8-7-7-.
8-8-8- timings, which is also the rated default timings, gave us another 20MHz (40MHz DDR) to make it 750MHz (1500MHz DDR).
Okay, for the final set of overclocking tests, here is CL9.
The pair of memory clocked in at 830MHz (1660MHz DDR) at 9-7-7-.
And finally, we got the highest frequency of 850MHz (1700MHz DDR) at 9-9-9-.
We only lost 20MHz (40MHz DDR) when the sub-timings were lowered from 9-9-9- to 9-7-7-. 9-8-8- returned the same results as 9-7-7-.
Clock speed does scale pretty linearly with voltage increase, but it stops abruptly at 1.90V. No improvement was seen when 2.0V was pumped in. We stopped trying at 2.1V. The memory could POST at any voltage we put it through, unlike the DDR2 kit which had a certain limit of Vdimm.
Like the DDR2 kit, we had a 70mm fan blowing over the memory kit and the northbridge to keep temperatures low.
We start the day of with a slightly tight CL7 setting.
Only 650MHz (1300MHz) for this pair of memory at 7-7-7-. The system would POST at a little bit more to 660MHz, but Windows would not be able to load.
Let us now try CL8.
We were able to get a decent 730MHz (1460MHz DDR) for 8-7-7-.
8-8-8- timings, which is also the rated default timings, gave us another 20MHz (40MHz DDR) to make it 750MHz (1500MHz DDR).
Okay, for the final set of overclocking tests, here is CL9.
The pair of memory clocked in at 830MHz (1660MHz DDR) at 9-7-7-.
And finally, we got the highest frequency of 850MHz (1700MHz DDR) at 9-9-9-.
We only lost 20MHz (40MHz DDR) when the sub-timings were lowered from 9-9-9- to 9-7-7-. 9-8-8- returned the same results as 9-7-7-.