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PDP Systems Patriot PDC1G3200+XBLK DDR Memory Review

PDP Systems Patriot PDC1G3200+XBLK DDR Memory Review - PCSTATS
Abstract: The kit is capable of 2-2-2-5 memory timings at their stock 200MHz speed, and can run up to 266MHz at a loose 3-4-4-8 timing.
Filed under: Memory Published:  Author: 
External Mfg. Website: PDP Systems Jan 20 2005   Mike Dowler  
Home > Reviews > Memory > PDP Systems PDC1G3200+XBLK

Overclocking and test system setup

PCSTATS tests DDR memory on two major CPU platforms - the AMD Athlon64 and the Intel Pentium 4 - because RAM behaves differently with each processor architecture. For instance, Intel users tend to run their memory at high speeds with high latency settings, and in general that works quite well for Intel-based computers. It would be detrimental to system performance if you were to run the same DDR memory settings on an AMD Athlon64 system, since latency plays a much larger role in system performance.

Because much of our audience is made up of enthusiasts, PCSTATS also runs overclocking tests so you can get an idea on how far the memory will go.

On both Intel and AMD test PCs, 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, and not with the system memory. On the Pentium 4 test system we sometimes use higher latencies in our tests, as latencies are not as important. With the AMD Athlon64 test system, the DDR RAM latency must run at 2-2-2-5, or the memory's tightest possible timings, as quick access is more important to the CPU design.

Patriotic overclocking!

One thing I like about overclocking PDP Systems' memory is that they state right from the beginning what to expect. With the PDC1G3200+XBLK, they state on the label that the memory can run at 200 MHz while using the most aggressive 2-2-2-5 memory timings, while loosening things up to 3-4-4-8 should allow you to run up to 266 MHz.

Starting with our Athlon64 test system, we raised the motherboard clock speed slowly while maintaining 2-2-2-5 memory timings. At 213 MHz our system showed some signs of instability and would often crash back to desktop when running 3D applications. Raising the memory voltage to 2.8V stopped this. We easily passed 220 MHz and even 230 MHz, but seemed to hit a wall getting past 231 MHz with tight timings. Loosening the timings allowed us overclock the memory a few MHz higher, but we didn't really try too hard at this, since Athlon64 systems should always be paired with low latency memory.

With the Intel rig, things didn't start off too well. To get the memory to function properly at 200 MHz with 2-2-2-5 memory timings we had to raise the voltage to 2.6V right off the bat. After that, things went pretty smoothly and the memory overclocked nicely. Using the aggressive timings, we were limited to a maximum of 223 MHz; anything higher and we'd get a BSOD during bootup. Raising the voltage to 2.8V didn't help, so we decided to lower memory timings to 3-4-4-8 to see how fast the memory could run at higher latencies.

We were certainly not disappointed and the memory hit a very respectable 264 MHz with only 2.8V! If we tried to go past 264 MHz, the system would sometimes crash for no apparent reason. PDP specifies that the 266MHz (533MHz) speed should be accompanied by a voltage of 2.85 to 2.95V, so we were satisfied that it would reach its advertised rate.

PCStats Test System Specs:
Athlon64 test system Pentium 4 test system
Processor:

AMD Athlon64 3200+

Intel Pentium 4 2.4C

Clock Speed:

10 x 200 MHz = 2 GHz
9 x 231 MHz = 2.08 GHz

12 x 200 MHz = 2.4 GHz
12 x 264 MHz = 3.17 GHz

Motherboards:

Asus K8V DLX, K8T800

ABIT IC7-MAX3, i875P

Videocard:

Asus Radeon X800XT PE

Asus Radeon X800XT PE

Memory:

2x 512MB PDP Systems Patriot PDC1G3200+XBLK
2x 512MB Corsair TwinX3200XL PRO
2x 512MB OCZ PC3200 Platinum Limited Ed.
2x 512MB Corsair TwinX1024-4400C25PT
2x 512MB TwinMOS Speed Premium PC3200

Hard Drive: 40GB WD Special Ed 20GB WD HDD
CDROM: MSI X48 CD-RW/DVD-ROM NEC 52x CD-ROM
PowerSupply: Vantec Stealth 470W PC Power & Cooling 510W
Software Setup

WindowsXP Build 2600
VIA 4in1 4.55V
Catalyst 4.11

WindowsXP Build 2600
Intel INF 5.02.1012
Catalyst 4.11

Benchmarks

Winstone 2004
SiSoft Sandra 2004
PCMark04
3DMark2001SE
X2: The Threat
UT2003

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Contents of Article: PDP Systems PDC1G3200+XBLK
 Pg 1.  PDP Systems Patriot PDC1G3200+XBLK DDR Memory Review
 Pg 2.  — Overclocking and test system setup
 Pg 3.  Benchmarks: Winstone, Sandra
 Pg 4.  Benchmarks: PCMark, 3DMark2001
 Pg 5.  Benchmarks: X2, UT2003
 Pg 6.  Overclocking comparison and conclusions

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