OCZ VX Revisited: DDR Updates on DFI nForce4
by Wesley Fink on March 30, 2005 12:05 AM EST- Posted in
- Memory
Test Results: OCZ PC3200 Platinum Rev. 2
To be considered stable for test purposes, Quake3 benchmark, UT2003 Demo, Super PI, Aquamark 3, and RTCW had to complete without incident. Any of these, and in particular Super PI and Return to Castle Wolfenstein, will crash a less-than stable memory configuration.| OCZ PC3200 Platinum Rev. 2 (DDR400) - 2 x 512Mb Double-Bank | |||||||
| CPU Ratio at 2.4GHz | Memory Speed | Memory Timings & Voltage |
Quake3 fps |
Sandra UNBuffered | Sandra Standard Buffered | Super PI 2M places (time in sec) |
Wolfenstein - Radar - Enemy Territory fps |
| 12x200 | 400DDR | 2-2-2-6 2.6V 1T |
549.5 | INT 2850 FLT 3045 |
INT 6066 FLT 6034 |
80 | 114.9 |
| 11x218 | 436DDR | 2-3-2-6 2.8V 1T |
546.3 | INT 2893 FLT 3065 |
INT 6452 FLT 6385 |
81 | 114.3 |
| 10x240 | 480DDR | 2.5-3-3-6 2.8V 1T |
550.2 | INT 3016 FLT 3231 |
INT 6709 FLT 6631 |
80 | 115.1 |
| 9x267 | 533DDR | 2.5-4-3-6 2.9V 1T |
554.6 | INT 3101 FLT 3331 |
INT 7026 FLT 6940 |
80 | 116.0 |
| 9x318 (2.86 GHz) |
Highest CPU/Mem Performance | 2.5-4-3-7 2.9V 1T |
649.0 | INT 3562 FLT 3752 |
INT 7828 FLT 7739 |
72 | 136.4 |
The OCZ PC3200 Platinum Rev. 2 was the only memory to achieve its best performance at a 9 ratio - reaching DDR636 in our DFI test bed. This was achieved at the more desirable 1T Command Rate. This level of performance is outstanding, but it is definitely worth noting that OCZ TCCD at DDR636 2.5-4-3-7 performance is roughly equivalent to OCZ VX Gold at 10x267 2-2-2-6. This is particularly interesting, since the CPU speed at 318x9 is 2.86GHz compared to 2.67GHz at 267x10.
OCZ PC3200 Platinum Rev.2 performs very well as the representative of fast TCCD memory. We checked results with G. Skill TCCD and achieved close to the same performance as OCZ with stable performance at DDR630 (315). This represents the kinds of normal variations that you will find in top-performing memory at the highest performance levels.
As impressive as DDR636 sounds, fast memory timings and a fast memory chip can offset both a higher memory speed and a slightly higher CPU speed. The best TCCD can perform just as well as VX, but it required DDR636 and a 119 MHz faster speed to match OCZ VX at 2-2-2-6 timings.
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AnnihilatorX - Wednesday, March 30, 2005 - link
This memory rocks. Can someone please do me a favour of buying this memory for me from newegg, ship it to me (UK/HK) and I'll pay him cost + postage + a bit extra via paypal. Thanks very much. It's a bit annoying since you cannot buy this ram from HK. No suppliers.Just e-mail me at annihilator@x-annihilation.com
Thanks again
ozzimark - Wednesday, March 30, 2005 - link
*notes that it's 245mhz at 2.5-2-2-10ozzimark - Wednesday, March 30, 2005 - link
#28my ballistix can go to 245mhz with 2.7v before my memory controller starts hating me and having some serious stability issues. though they seem to scale nicely with voltage, i can't really test it out, because even at 3-4-4-10 with 2T, i can't get over 250mhz.
n yusef - Wednesday, March 30, 2005 - link
AnandTech should do a review of the TwinMOS UTT chips that cost $150 less than the VX. I bought VX before I heard about the TwinMOS stuff, but my friend is doing 2-2-2-6 at 255MHz with 3.4 volts at 1:1. My VX can do 260MHz, but I would give 5MHz RAM/FSB bandwidth and 50MHz core for $150 any day.JoKeRr - Wednesday, March 30, 2005 - link
one more thing, I've heard from many ppl that they're running their BH5 sticks (2x512) to 250 2-2-2-5 with like 3.1 to 3.2V, if u still do have some old BH5, would it be possible to lay a show down between bh5 and VX?? I think I saw a guy on xtremeresouce /or maybe system doing ddr293 with 4V with mushkin BH5 at 2-2-2-5 timing, that's crazy.JoKeRr - Wednesday, March 30, 2005 - link
How does the Ballistix react to voltage?? I've heard that Tccd doesn't react very well, but the old EB stuff could do 2.5-2-2-5 at ddr500 once u give it 3.1V. Could you plz try that and see how the Ballistix scale with voltage plz?? thankQ in advance.JoKeRr - Wednesday, March 30, 2005 - link
Rapsven - Wednesday, March 30, 2005 - link
23-If you are trying to get 2 gigabytes to do those speeds in tandem with the CPU, you'll have problems. Try using the regular 2*512 instead of 4*512 and see you can hit 250 fsb at 2-2-2.
Or ask the OCZ guys, they're very helpful.
ozzimark - Wednesday, March 30, 2005 - link
hmm, my bad, the [img] tags don't work here. just copy and paste that link :)and since it seems that some posts have been deleted, my above comment is in response to #13
ozzimark - Wednesday, March 30, 2005 - link
#14-that's quite interesting. maybe the spd's on the ram sticks are changing important values other than the cas, trcd, trp? i know that there are a lot of values that effect ram performance other than those three. i actually went through most of them on the dfi board, and found that lower isn't always better, similar to tras. though with that you said, i may have to go through and re-tweak my setup with the write benchmark in mind too. i never really gave it much thought assuming that it would scale similarily to read bandwidth.
also, i noticed some inconsistancies at various multipliers. i tested at two speeds, 230mhz (near the limit of my memory controller) at 2.5-2-2-10, and 200mhz at 2-2-2-10. (i use 2x512mb of crucial ballistix)
the only thing changed between runs is the cpu mutliplier. the ram is 1:1, and everything else remains constant.
[img]http://www.freewebs.com/cfeclipse/latency.PNG[/img]