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19th May 2009, 21:34 | #1 |
[M] Reviewer Join Date: Nov 2004 Location: Waregem
Posts: 6,466
| [GD70] - AM3 and DDR3, time to apply DDR2 timings. I really want to explain this title more, but my free time is quite limited these days. In short: you might want to lower timings instead of increasing the memory frequency when running Phenom2 and DDR3. Tony (from OCZ) has been testing the influence of the memory frequency in comparison to lowering the timings, here are the results: http://www.xtremesystems.org/forums/...d.php?t=224502 The OCZ Blades are quite suited for the low-latency work: 700MHz CL5 at 1.65v :-). |
19th May 2009, 21:55 | #2 |
Madshrimp Join Date: May 2002 Location: 7090/Belgium
Posts: 79,021
| this comes as no surprise AMD CPUs have always liked lower timings vs higher speed afaik
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20th May 2009, 05:27 | #3 | |
Member Join Date: Apr 2005
Posts: 1,338
| Quote:
exampel. 05 with TCCD @ 300+mhz 2.5-3.3.8 orso would have killed BH-5 @ 270mhz 2-2-2-5. both 1T, but then again in 01 BH-5 owned. the bench just loved it. that a good exampel , its now with 3gb kits vs 6gb kits in 32M superPI. the 6gb give's u the edge there, thoughe i could not test any my self. i would like to know what other benches benefet from it .
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20th May 2009, 09:29 | #4 |
[M] Reviewer Join Date: Nov 2004 Location: Waregem
Posts: 6,466
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20th May 2009, 11:16 | #5 |
[M] Reviewer Join Date: Nov 2004 Location: Waregem
Posts: 6,466
| Last screen from yesterday: 1700CL6. Raised voltage to 1.7v to get it stable, but it seems that it's only stable in ganged mode. |
21st May 2009, 23:53 | #6 |
Posts: n/a
| Nice results . My kit is the OCZ 6GB 1866MHz 8-8-8-X, which I'll be testing soon. About memory overclockability, it seems that the IMC in the new AM3 CPUs is better than the one on the old Phenoms (Phenom I). Regards, Massman. |
22nd May 2009, 08:51 | #7 |
[M] Reviewer Join Date: Nov 2004 Location: Waregem
Posts: 6,466
| The results are good, but not excellent. I reckon the AM3 could benefit from 1GHz CL7 even in terms of latencies, but the current technology just doesn't allow us to go beyond 900MHz stable (and even that is quite difficult). I'm not sure if it's IMC-quality related. I'd sure like to test (another) 955 to check if I can get >900MHz or not. |
29th May 2009, 22:23 | #8 |
[M] Reviewer Join Date: Nov 2004 Location: Waregem
Posts: 6,466
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30th May 2009, 14:56 | #9 |
[M] Reviewer Join Date: Nov 2004 Location: Waregem
Posts: 6,466
| Just tried the setup under the Single Stage unit ... but 1800CL9 is as unstable as it's on air cooling. I'll have to switch to an 955 if I want to push the memories on this AM3 platform. |
30th May 2009, 15:02 | #10 |
[M] Reviewer Join Date: Dec 2008
Posts: 3,209
| Maybe also 2 vs 4gb Massman ? puts more strain on the IMC ? Same as with the RE |
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