New Memory Highs: Corsair and OCZ Introduce DDR550
by Wesley Fink on February 19, 2004 6:03 PM EST- Posted in
- Memory
Test Results: Corsair XMS4400 & OCZ PC4400
To test overclocked stability, we used the very demanding Gun Metal 2 - Benchmark 2, which pushes systems with its DX9 routines. To be considered stable for test purposes, Gun Metal, our Quake3 benchmark, UT2003 Demo, Super PI, Halo, and Comanche 4 had to complete without incident. Any of these, and in particular Super PI and Gun Metal, will crash a less-than stable memory configuration.Corsair XMS4400v1.1 TwinX - 2 x 512Mb Double-Bank | |||||
Speed | Memory Timings & Voltage | Quake3 fps | Sandra UNBuffered | Sandra Standard Buffered | Super PI 2M places (time in sec) |
400DDR 800FSB |
2-3-3-7 2.55V |
318.1 | INT 2663 FLT 2639 |
INT 4442 FLT 4445 |
133 |
500DDR 1000FSB |
2.5-3-4-7 2.65V |
390.2 | INT 3147 FLT 3228 |
INT 5549 FLT 5520 |
108 |
533DDR 1066FSB |
2.5-4-4-7 2.75V |
411.9 | INT 3345 FLT 3362 |
INT 5842 FLT 5819 |
102 |
550DDR 1100FSB |
3-3-4-8 2.75V |
422.9 | INT 3415 FLT 3529 |
INT 6054 FLT 6008 |
98 |
560DDR 1120FSB |
3-3-4-8 2.75V |
436.8 | INT 3606 FLT 3538 |
INT 6124 FLT 6101 |
95 |
Corsair XMS4400 did not perform any better or reach higher overclocks when using 2.85V for the memory. In fact, performance was often worse or we got a no-boot condition when 2.85V was selected. 2.75V allowed us to get all we could from Corsair's DDR550.
OCZ PC4400 Dual-Channel Kit - 2 x 512Mb Double-Bank | |||||
Speed | Memory Timings & Voltage | Quake3 fps | Sandra UNBuffered | Sandra Standard Buffered | Super PI 2M places (time in sec) |
400DDR 800FSB |
2-3-3-7 2.55V |
319.3 | INT 2686 FLT 2653 |
INT 4455 FLT 4422 |
133 |
500DDR 1000FSB |
2.5-3-4-7 2.65V |
387.7 | INT 3146 FLT 3246 |
INT 5516 FLT 5470 |
108 |
533DDR 1066FSB |
3-3-4-7 2.75V |
412.2 | INT 3416 FLT 3450 |
INT 5846 FLT 5888 |
102 |
550DDR 1100FSB |
3-3-4-8 2.75V |
421.9 | INT 3446 FLT 3518 |
INT 6040 FLT 6003 |
98 |
571DDR 1142FSB |
3-3-4-8 2.75V |
438.5 | INT 3752 FLT 3642 |
INT 6231 FLT 6237 |
94 |
OCZ PC4400 reached approximately the same overclock at 2.75V that we found with Corsair's DDR550. That is, both reached about DDR560 at 2.75V. The OCZ did not have a problem with 2.85V, however, and continued on to 571DDR. Frankly, neither of these results with DDR550 shows much headroom. 560 and 571 represent just 1.8% to 3.8% over the DDR550 specification. This is much less "reserve" than we normally see with Premium memory.
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retrospooty - Thursday, February 19, 2004 - link
Nice results at 5:4 vs 1:1 ... See, I told you so, after reading one of your older Ram articles from a few months back... 5:4 2-2-2 beats 1:1 2.5-4-4-8 anyday =)I'm glad you tested it !
kamper - Thursday, February 19, 2004 - link
holy tiny target market, batman!how many people require memory to run at 275fsb default?
Pumpkinierre - Thursday, February 19, 2004 - link
Very good memory article once again Wesley. I dont know where this 'low latency memory doesnt make any difference' argument started but from my observations, it is false. OCZ usually test on an ABIT IC7 so I wonder why it did't make the grade on the DDR550?Any hints as to when DDR500@ 2-2-2-5 is going to become reality. It seems like the old BH5s are still the lowest latency mem. chips and they've been around for a year now. 1:1 at low latencies and PAT aggressive is the way to go. That's why I run my 2.6c at 2.8 even though it goes stable to 3.3 but then I got to run the mem. at 5:4 (no PAT) and performance improvement is barely noticeable.