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Corsair TwinX2048-4000PT PC4000 DDR500 Memory Review
Corsair TwinX2048-4000PT PC4000 DDR500 Memory Review - PCSTATS
Corsair's new 2GB TwinX2048-4000PT DDR500 RAM kit is rated to run at speeds of up to 250 MHz, who says you had to sacrifice speed for higher capacity?
 82% Rating:   
Filed under: Memory Published:  Author: 
External Mfg. Website: Corsair Dec 13 2005   C. Sun  
Home > Reviews > Memory > Corsair TwinX2048-4000PT

PCSTATS Memory Test Methodology and benchmarks

PCSTATS tests DDR memory on AMD Athlon64 systems only because Intel has effectively made the transition to DDR2. Enthusiasts usually keep to the bleeding edge, so fast DDR memory is useless for the Intel overclocker looking for more juice.

On AMD test systems we're only interested in seeing how high we can go with the memory running 1:1, as running with other dividers puts the overclocking bottleneck elsewhere, not with the system memory. We usually run DDR RAM latency at 2-2-2-5, or the memory's tightest possible timings, as quick access is important to the CPU design. However in cases where memory is built to run at high speeds with lax memory timings, we will run the benchmark tests at the manufacturer specified timings. Not doing so would put high speed DIMMs at a disadvantage since the memory may not be designed to run at tighter memory timings.

As we move into the benchmarks a quick explanation is in order as to why the results will show minor performance gains due to the faster memory speeds we're testing. With previous platforms, increasing memory speed often meant also increasing the bus speed between the processor and memory. Since the memory controller is integrated into the Athlon64 processor, overclocking memory does not increase the speed of data moving to and from the processor any further, since there is no bus. To really get the most from your memory overclocking, you must also increase the CPU speed so it can handle the increased memory bandwidth. The reason why we do not do this during testing is because CPU speed will affect the benchmarks and that would not allow the results to be directly comparable to previous tests. By keeping the processor at approximately the same speed for all tests, we are seeing the real world benefit from the increased memory frequency alone.

Overclocking Athlon 64's is a bit different since there is no more bus between the memory and CPU. On your system, make sure you increase the speed of your processor so you can get the most out of both the memory and CPUs!

PCStats Test System Specs:
memory test system specs reference system specs

amd athlon64 4000+

clock speed:

12 x 200 mhz = 2.4 ghz
8 x 290 mhz = 2.32 ghz

12 x 200 mhz = 2.4 ghz


dfi lanparty nf4 sli-dr (nf4-sli)



memory: 2x 1024mb corsair twinx1024-4000pt

2x 512mb patriot pdc1g5600elk
2x 512mb corsair twinx1024-3200xl pro
2x 512mb centon gemini pc3200
2x 1024mb ocz pc4000 gold
2x 1024mb corsair twinx1024-4400 pro

hard drive: 74gb western digital raptor
cdrom: aopen combo 52x
powersupply: pc power & cooling turbocool 510 sli
heatsink: athlon64 4000+ reference heatsink
software setup

forceware nf4 6.70
catalyst 5.12


business winstone 2004
sisoft sandra 2005
doom 3

with that out of the way, let's get started with the benchmarks!

Winstone 2004 Source: Zdnet

Business Winstone 2004 runs real applications through a series of scripted activities and uses the time a PC takes to complete these activities to produce its performance scores.

Business Winstone 2004
Memory: Points Ranking
2x 512MB Patriot PEP5125600ELK PC5600 (200/400) 31.7
2x 512MB Corsair TwinX1024-3200XL PRO (200/400) 31.5
2x 512MB Centon GEMiNi PC3200 (200/400) 32.3
2x 1024MB OCZ PC4000 Gold (200/400) 32.5
2x 1024MB Corsair TwinX2048-4400 Pro (200/400) 32.7
2x 1024MB Corsair TwinX2048-4000PT (200/400) 32.1
2x 1024MB Corsair TwinX2048-4000PT (290/580) 35.2

The extra 1GB of memory does not do much for workstation style applications, however overclocking can boost performance nicely.

SiSoft Sandra 2005 Source:Sandra

Sandra is designed to test the theoretical power of a complete system as well as the individual components. The results are also purely theoretical and may not represent real world performance.

Sisoft Sandra 2005 Benchmark Results
Memory Integer SSE2: Float SSE2:

2x 512MB Patriot PDC1G5600ELK PC5600 (200/400)

6066 6018
2x 512MB Corsair TwinX1024-3200XL PRO (200/400) 6057 6026
2x 512MB Centon GEMiNi PC3200 (200/400) 6058 6026
2x 1024MB OCZ PC4000 Gold (200/400) 6080 5993
2x 1024MB Corsair TwinX2048-4400 Pro (200/400) 6074 6012
2x 1024MB Corsair TwinX2048-4000PT (200/400) 6063 6021
2x 1024MB Corsair TwinX2048-4000PT (290/580) 7047 6833

Memory bandwidth at stock speeds is nice and high, and breaks 6000MB/s. Overclocking allows the Corsair TwinX2048-4000PT to break the 7000MB/s barrier, very sweet!

< Previous Page © 2023 PCSTATS.com Next Page >


Contents of Article: Corsair TwinX2048-4000PT
 Pg 1.  Corsair TwinX2048-4000PT PC4000 DDR500 Memory Review
 Pg 2.  — PCSTATS Memory Test Methodology and benchmarks
 Pg 3.  Benchmarks: PCMark04. PCMark05
 Pg 4.  Benchmarks: 3DMark2001, 3DMark05
 Pg 5.  Benchmarks: UT2003, UT2004
 Pg 6.  Benchmarks: Doom 3, Battlefield 2
 Pg 7.  Max memory overclocking and Conclusions

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