Performance Test Configuration

The Memory testbed is the same used in Searching for the Memory Holy Grail — Part 2 and Mushkin & Adata: 2 for the Fast-Timings Lane. All test conditions were as close as possible as those in our earlier memory reviews.

 INTEL 875P Performance Test Configuration
Processor(s): Intel Pentium 4 2.4GHz (800MHz FSB)
RAM: 2 x 512MB Corsair TwinX4000 PRO (DS)
2 x 512MB Mushkin Level II PC3500 (DS)
2 x 256Mb Adata DDR450 (SS)
2 x 512MB Adata PC4000 (DS)
2 x 512MB Corsair PC4000 (DS)
2 x 512MB Geil PC4000 (DS)
4 x 256MB Kingston PC4000 (SS)
2 x 256MB Kingston PC4000 (SS)
2 x 512MB OCZ PC4000 (DS)
4 x 256MB OCZ PC3700 GOLD (DS)
Hard Drives 2 Western Digital Raptor Serial ATA 36.7GB 10,000 rpm drives
in an Intel ICH5R RAID configuration
PCI/AGP Speed Fixed at 33/66
Bus Master Drivers: 875P Intel INF Update v5.00.1012, SATA RAID drivers installed, but IAA not installed
Video Card(s): ATI 9800 PRO 128MB, 128MB aperture, 1024x768x32
Video Drivers: ATI Catalyst 3.6
Operating System(s): Windows XP Professional SP1
Motherboards: Asus P4C800-E (875) with 1.010 Release BIOS

Corsair is very clear that their PC4000 PRO is aimed at the Intel 875/865 user. They consider the better memory for an Athlon user to be their new PC3200 PRO. For that reason, performance on an Athlon nForce2 Ultra 400 was not tested.

Corsair TwinX1024-4000PRO Specifications

 Corsair TwinX1024-4000PRO Memory Specifications
Number of Dimms & Banks: 2 DS
Dimm Size 512 Mb
Total Memory 1 GB
Rated Timings 3-4-4-8
Rated Voltage 2.75V Test Voltage,
Maximum Voltage Not Specified

Test Settings

The following settings were tested with Corsair TwinX1024-4000PRO:
  1. 800FSB/DDR400 — the highest stock speed supported on 875/865 motherboards.
  2. 1000FSB/DDR500 — the specified rating of the memory modules we were testing.
  3. Highest Stable Overclock — the highest settings we could achieve with the memory being tested.

Index Test Results
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  • Anonymous User - Tuesday, September 16, 2003 - link

    Witness the only two paragraphs that have the word univeral: I got excited thinking they may work in the place of DDR2.

    However, if you want it all — great timings at DDR400, top performance at DDR500, and a reasonable compromise on the top overclock you can achieve above DDR500 — then Corsair TwinX1024-4000PRO should be your choice. The Corsair CMX512-4000PRO modules and the matched modules in the TwinX kit are the only DDR500 that we have tested that come close to Universal High-Speed memory for the 865/875 platform. They even make sense for Athlon fans who want decent DDR400 performance now and a hedge for that future Socket 939 that will handle regular unbuffered memory.

    We have heard that Corsair 4000 PRO is the first of many “Universal” modules that will soon appear from other manufacturers and that is certainly great news. But for now, Corsair 4000 PRO is the only Universal high-speed memory.
  • Anonymous User - Tuesday, September 16, 2003 - link

    if you guis can get an ocz pc4000 gold i believe it will support CAS2 i ddr400 and will outperform corsair xms4000pro in ddr400. at the same, time it will most probably overclock better than the corsair. And btw, i will be very glad to see Geil pc-4200 ddr533 in this coparison.
  • Wesley Fink - Tuesday, September 16, 2003 - link

    Corsair has just emailed AnandTech with additional information:

    "All our 4000 modules use the same Hynix die, which are the fastest die available currently. Our 3200C2 ProSeries modules use 5ns rev.C Winbond chips."

    We have been told by other sources that Hynix has a new high-speed chip, and it appears Corsair is the first to use it in production memory.

  • Anonymous User - Tuesday, September 16, 2003 - link

    In my humble opinion these memory types are getting a little bit too much attention. Nobody really needs them at about three times the regular price level. Granted, many will still be excited about these thing regardless of their actual needs. No offense intended. :)
  • Anonymous User - Tuesday, September 16, 2003 - link

    When do you think you will be able to get a sample of OCZ PC4000 Gold for review?
  • Wesley Fink - Tuesday, September 16, 2003 - link

    Why it is "Universal" High-Speed memory is explained in the review. The Corsair 4000PRO is the first memory rated DDR500 that can also run CAS 2 at DDR400, and compete with the fastest DDR400 memory available.

    We supply several price-check links on the Anand-Tech page. We also do periodic updates of BEST prices and memory is now included in those updates. Since launch prices are often higher and prices fluctuate over time, we rarely mention a specific price in a review.
  • Anonymous User - Tuesday, September 16, 2003 - link

    Ummm, wesley, what makes the memory "universal" ?

    Currently, Spartan technologies lists these on pricewatch as $217 for a 512mb stick and $427 for a twinx of 2*512mb. I am always suspicious of reviews where the price is never mentioned .

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