Corsair Dominator DDR2-1111: Dual-Path Cooling Pushes Performance
by Wesley Fink on January 1, 2007 5:15 AM EST- Posted in
- Memory
Overclocking Performance (Highest Speed)
The Corsair Dominator PC2-8888 is rated at DDR2-1111 4-4-4-12, and we managed to reach that performance level on the ASUS P5W-DH Deluxe. As we've said before, the ratios on the ASUS 975X board are very demanding, and the earlier Dominator 1142 did not do nearly as well on this board. Top speed for the Corsair Dominator PC2-8888 was DDR2-1130, which is not much of an overclock going from 4-4-4 timings to 5-5-5 timings on the 975X. In fact OCZ Flex XLC managed to reach 1172 on this same board, but it is the only memory we have tested that performed better than the Dominator 1111 on this board.
With Dominator doing so well at 4-4-4 timings, it is probably best to only go to FSB speeds that Dominator can handle at 4-4-4 timings. Sticking to 4-4-4 timings will likely give you the best performance possible with this outstanding memory.
The Corsair Dominator on the NVIDIA 680i behaved like an entirely different memory, reaching much higher performance levels and overclocks than could be achieved on the P5W-DH. On the 680i the Dominator reached a stable DDR2-1315, which is the fastest performance we have ever measured on this board. Even more significantly, Dominator PC2-8888 was able to run all our benchmarks at 4-4-4 timings at DDR2-1233. This speed at 4-4-4 timings yielded top-notch performance in all our benchmarks. There are two components to memory performance - speed and memory timings - and the Corsair Dominator 1111 appears to excel in both areas.
Only one other memory is in the same performance ball park with Dominator, and that is OCZ Flex XLC. Flex XLC comes close on the 680i, but Dominator wins in raw speed and best timings at a given speed. On the ASUS P5W-DH OCZ Flex seems to have the current compatibility edge. Dominator is fast on the 975x, but Flex edges it out for top performance on that platform. Given the 680i performance, however, we expect Corsair may well be able to push Dominator to the 975X lead as well - with something as basic as a BIOS or SPD upgrade.
The Corsair Dominator PC2-8888 is rated at DDR2-1111 4-4-4-12, and we managed to reach that performance level on the ASUS P5W-DH Deluxe. As we've said before, the ratios on the ASUS 975X board are very demanding, and the earlier Dominator 1142 did not do nearly as well on this board. Top speed for the Corsair Dominator PC2-8888 was DDR2-1130, which is not much of an overclock going from 4-4-4 timings to 5-5-5 timings on the 975X. In fact OCZ Flex XLC managed to reach 1172 on this same board, but it is the only memory we have tested that performed better than the Dominator 1111 on this board.
With Dominator doing so well at 4-4-4 timings, it is probably best to only go to FSB speeds that Dominator can handle at 4-4-4 timings. Sticking to 4-4-4 timings will likely give you the best performance possible with this outstanding memory.
The Corsair Dominator on the NVIDIA 680i behaved like an entirely different memory, reaching much higher performance levels and overclocks than could be achieved on the P5W-DH. On the 680i the Dominator reached a stable DDR2-1315, which is the fastest performance we have ever measured on this board. Even more significantly, Dominator PC2-8888 was able to run all our benchmarks at 4-4-4 timings at DDR2-1233. This speed at 4-4-4 timings yielded top-notch performance in all our benchmarks. There are two components to memory performance - speed and memory timings - and the Corsair Dominator 1111 appears to excel in both areas.
Only one other memory is in the same performance ball park with Dominator, and that is OCZ Flex XLC. Flex XLC comes close on the 680i, but Dominator wins in raw speed and best timings at a given speed. On the ASUS P5W-DH OCZ Flex seems to have the current compatibility edge. Dominator is fast on the 975x, but Flex edges it out for top performance on that platform. Given the 680i performance, however, we expect Corsair may well be able to push Dominator to the 975X lead as well - with something as basic as a BIOS or SPD upgrade.
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anandtech02148 - Tuesday, January 2, 2007 - link
let say a dual ddr2 800mhz occupied 2 slotand the other 2 slot is occupied by 533mhz ddr2
although they operate at different voltage, will it work?
what am i to do with older memory modules when all these new
1111mhz and newer models come out
Wesley Fink - Wednesday, January 3, 2007 - link
Different grades of memory can be on the board, but the channels can not be individually set. Therefore the memory has to be run at the speed of the slowest modules. However, some 533 can run DDR2-800 and most run at least 667.anandtech02148 - Monday, January 1, 2007 - link
Cheers to Anandtech for using a 520psu. hooorayy.. finally we're testing something at a sane level.
600buxs for memory, one of the reason why Intel got out of memory business to focus on Cpu
in 1980s.
2.4v to operate, are we reaching 12v soon for running memory modules?
in the meantime i'm still dreaming for that 2gig at 100buxs range. and i was a fan of Rambus RAm until this ddr cartels took over.
daos - Monday, January 1, 2007 - link
I recently purchased some Dominator PC6400C4D to replace my old OCZ PC6400 Platinum. I can honestly say that the heatsinks make a huge difference in overall temps of the DIMMS. Either the OCZ ran extremely hot at default voltage or the Dominators are insanely efficent at keeping the memory cool.I run these at 2.4v 3-3-4-9 DDR2800Mhz and they are cool to the touch. I still cannot believe how cool these heatsinks keep the memory. At first I was hesitant to raise the voltage to 2.4v but after seeing how cool they run I wish my P5WDH board allowed for higher memory voltages!
Guys/Gals, the heatsinks really do work and I am a living example of it. I have always been the one to instantly rip the spreaders off of memory in the past but these really work.
MadAd - Monday, January 1, 2007 - link
Not so long ago ram worked perfectly fine without heatspreaders at all, calculations at the time showed that ram was no-where near needing them now its hard to get anything but value ram without them. For a few coinsworth of metal they have engineered lots of pretty colors and shapes to dazzle us with but do we really need it?IMO instead of a pro-forma memory review, you have an opportunity to spice it up a bit with the angle of either supporting this new fad, or cut through the spin, with some measured data. Simply take the ugly things off and benchmark it again. See if it still hits the same highs and still retains its timings with no heatspreader.
Wesley Fink - Monday, January 1, 2007 - link
A very good idea. The only problem is the inner heatsinks are heat merged to the PCB, and the outer heatsinks use a thermal epoxy for mounting to the memory chips. Unlike the old days, removing a heatspreader is now often fatal to memory. The surface mount memory chips are easily pulled off, even if you use extreme care, in trying to remove the outer heatspreaders. Removing the inner ones could destroy the PCB.We could test this if the memory makers would supply the memory without heatsinks. The question then is why would they want to?
I can tell you from past testing that fan cooling the memory definitely extends overclocking to higher levels. However, removing heatsinks made no difference at all in OC on DDR with simpler sinks. This setup by Corsair is quite a bit more sophisticated than the colored metal covers and it may make some real difference in performance.
MadAd - Thursday, January 11, 2007 - link
Ok point accepted that it may be hard to render them testable if epoxy is used but dont you love a challenge? :lol:Honestly, its starting to get serious now with these http://www.dailytech.com/article.aspx?newsid=5662">http://www.dailytech.com/article.aspx?newsid=5662
As you know yourself fan cooling is something applied whatever the form they come in, ok so you could analyse how efficient each method is but the big question is still whether its all just hype or not. I think hype.
cmdrdredd - Monday, January 1, 2007 - link
Team Extreme memory never comes with heatspreaders, and they make memory that can go to DDR2-1200 with the right setup. What does this tell you?customcoms - Monday, January 1, 2007 - link
Wes, I am sorry, but if I'm reading the same benchmarks as you are, of the three games you tested, the OCZ is still the fastest memory (granted, Quake 4 is within margin of error) period, around 1-2 fps faster than the corsair. Why you say the corsair is faster when the benchmarks speak otherwise (the tighter timings+higher speed and the higher raw speed of the corsair is the only thing I see better than the OCZ).
Basically, in real world applications (i.e games, which are what 95+% of the market buying these kits are doing with their machines), the OCZ is faster, according to YOUR OWN benchmarks. You also give it the edge on the 975X platform. Hence, I would say it is the better ram (plus it has the option for water cooling). Doesn't really matter, as I won't be spending that kind of money on ram EVER-better to buy an 8800GTX etc.
Wesley Fink - Monday, January 1, 2007 - link
When you also include results on the nVidia 680i the Corsair Dominator is faster overall. On the 975x, which is the only thing included in the graph results, the OCZ Flex XLC is faster. Individual timings are also slightly faster at DDR2 1067 and DDR2 667 on the Corsair.OCZ Flex XLC and Corsair Dominator PC@-8888 are both at the top of our benchmarking and either would be a great enthusiast choice. The Corsair pushes the 680i slightly faster and therefore is the fastest memory we have tested to date.