Corsair CMX1024-3500LL PRO

Corsair is the most widely recognized brand of enthusiast or high-performance memory in the world. Corsair also maintains very visible support in the form of RamGuy, who provides support for Corsair products at and as a participant in many Forums.

The 2GB TwinX Kit came as a matched pair of 1 GB DIMMs. These 1GB DIMMs are rated at DDR433, but Corsair tells us that they have also recently introduced fast 1GB DIMMs at higher rated speeds. The rated timings of 2-3-2-8 are the fastest of the three 2GB kits in these tests.

The 3500LL PRO includes aluminum heatspreaders and LED activity lights that give an active indication of the operation of the RAM. Corsair also markets an Expert line of DIMMs, which include Programmable LEDs that can display memory speed, memory voltage, and other useful memory diagnostic data.


The CMX1024-3500LL PRO is rated at CAS 2, an extremely fast rating for a 1GB DIMM.

Corsair CMX1024-3500LLPRO Memory Specifications
Number of DIMMs & Banks 2 DS
Total Memory
Rated Timings 2-3-2-8 at DDR433
Rated Voltage Standard (2.6V) Voltage

Test Results

Corsair CMX1024-3500LLPRO (DDR433) - 2x1GB Double-Bank
CPU Ratio at 2.4GHz Memory
Memory Timings
& Voltage
Sandra UNBuffered Sandra Standard
Super PI 2M places
(time in sec)
Wolfenstein - Radar - Enemy Territory fps
12x200 400DDR 2-3-2-7
2.5V 1T
547.4 INT 2654
FLT 2808
INT 5984
FLT 5918
80 120.8
11x218 436DDR 2-3-2-7
2.6V 1T
551.7 INT 2825
FLT 2990
INT 6246
FLT 6178
80 121.5
10x240 480DDR 2.5-3-2-7
2.7V 1T
558.4 INT 2991
FLT 3142
INT 6441
FLT 6360
79 122.5
Highest MEM Speed
492 DDR
2.7V 1T
570.6 INT 3060
FLT 3250
INT 6570
FLT 6507
78 125.7
To be considered stable for test purposes, Quake3 benchmark, UT2003 Demo, Super PI, Aquamark 3, and Comanche 4 had to complete without incident. Any of these, and in particular Super PI, will crash a less-than stable memory configuration.

Several things stand out in the performance of this Corsair. We were able to maintain 2-3-2 timings all the way to DDR456. These excellent timings are very close to the best 2-2-2 that we currently see with 512MB DIMMs. The memory was able to accomplish this at very low voltage 2.6 to 2.7 volts. In fact, the Infineon chips that Corsair uses rarely need or like higher voltage. Increasing voltage beyond 2.7V did not allow us to go any higher in overclocking, nor did more relaxed timings allow us to push higher. The limit is DDR492 - very close to DDR500.

Corsair appears to have binned these Infineon chips for fastest performance in the most used DDR400 to DDR480 range. In that range, these 1GB DIMMs perform very competitively with the best 512MB DIMMs.

Performance Test Configuration Gigaram 2GB Dual Channel PC-4200


View All Comments

  • woodspire - Thursday, June 29, 2006 - link

    What happen if instead of using 4x 512 memory you use 2 x 512 and 2 x 1024. Same speed (PC-3200), same timing, and even same brand.

    Still acheving dual channel ?
  • qquizz - Saturday, December 10, 2005 - link

    Sounds great and all but a query at Pricewatch brought up a blank.
    Where can you buy the OCZ PC4000 EB Platinum Edition
  • Hurricanesan - Friday, November 11, 2005 - link

    I'm looking for 2Gb memories for my new computer.
    I had an hard time choosing between the Corsair 3500LLPro and the OCZ 1024MB EB Platinum.
    This morning, I've noticed this test. Since the OCZ was able to go up to 500Mhz and I plan using an A8N32-SLI, the choice looked easy.
    But a friend of mine pointed out an old story in which OCZ was giving very good sample to the press and lesser products in the shops. I've looked about that story and now it seems to me that OCZ is really unstable in its production and not very clean ... or used to be.

    I would really not like to buy those memories and find that they can't stand their specification.

    Since right now it seems that both the Corsair and the OCZ are not available in stores less that 2 hours plane from me, I have a week to make up my mind.

    If anyone can help me balance one way or the other, please post.

  • KriegsMaschine - Tuesday, November 29, 2005 - link

    OCZ is the best brand I'd say. I currently have Corsair Twinx C2Pro "2x512 ddr400 Cas 2.5" and it's good... but WAY TOO expensive for it's quality. You pay too much for the brand like you would by getting a cloth from a designer. OCZ have the best performance while having reasonable prices and quality stuff for Value, Mainstream and High-End. Their tech support is very good too, as all their products. My next PSU will be OCZ ModStream 450watts.

    Nice article. I was thinking these days about going from 2x512 to 4x512 with my Athlon64 since it's less expensive than 2x1Gb and generaly have better timing but after reading that 1T Command was impossible with 4 DIMMS... I changed idea!

    What would had been nice for the review would had been some more real game benchmarks. I mean not old stuff like Quake 3 because who care to have +20fps when you already got 550! Some newer stuff such as UT2003, FEAR, BF2, FarCry, HL2 would had been a better choice. To me those SuperPi, SandraMark... means almost nothing. All I want when getting such expensive rams is more FPS in games. Comparing 2x1Gb in 1T Command vs 2x1Gb in 2T Command would had been better too because don't you think 2x512Mb vs 2x1Gb is unfair? 0_o
  • Shimmishim - Wednesday, October 12, 2005 - link

    what the heck? no 2x1 crucial ballistix? wow. i have a set that can do 290 mhz 1:1 with 3-3-3-7 timings and only 2.8 volts. Reply
  • leexgx - Saturday, November 5, 2005 - link

    do not think it was out then (or it was not sent to anandtech)

    i just got the Crucial 2GB DDR PC4000 Ballistix from overclockers and its less then £200 for this week only (norm £240) (got the A8N-SLI premium as well)

    i good to see that Ballistix stuff can do that

    i probley just set me X2 3800+ at 250 so me ram is doing the same (got it at 241 now on the cpu it norm runs at 200 so its an 410mhz oc {4600+ x2})
  • ricleo2 - Wednesday, October 12, 2005 - link

    After some recommendations from the forum here, I just got 2 sticks of GSKILL PC4000 at one gig apiece to replace my OCZ 2 sticks at 512 Megs apiece in my MSI K8N SLI PLATINUM. After comparing benchmarking results, before and after, it was not even close. RMA already approved from NEWEGG. Reply
  • phidjit - Wednesday, October 12, 2005 - link

    It's 1024, with 2-3-2-5 timings and runs at DDR433, it seems like it would have been a better comparison to the Corsair "CMX1024-3500LL PRO" (also 1024, DDR443, but 2-3-2-6 timings).

    Anyone seen benchmarks for the gigaram mach10000?

    It looks like it could be a bargin.

  • qquizz - Wednesday, October 12, 2005 - link

    These are the type of articles I come to AT to get. Thanks Wes. Reply
  • znir - Wednesday, October 12, 2005 - link

    Thanks for the information in the review. however, i think it would be good to see result of 4x512MB high performance sticks like the OCZ PC4000 VX. Reply

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