Patriot DDR400 2-2-2/DDR533 3-4-4: Performance AND Value

Test Results : Patriot PC3200+XBLK

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 particularly Super PI, will crash a less-than stable memory configuration.

Patriot PC3200+XBLK (DDR400/533) - 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	400 DDR	2-2-2-6 2.6V 1T	545.5	INT 2773 FLT 2952	INT 6091 FLT 6033	80	114.5
11x218	436 DDR	2-3-2-6 2.8V 1T	542.3	INT 2791 FLT 3002	INT 6455 FLT 6388	81	114.0
10x240	480 DDR	2.5-3-3-6 2.8V 1T	547.8	INT 2920 FLT 3135	INT 6700 FLT 6627	81	114.6
9x267	533 DDR	2.5-3-3-6 2.9V 1T	556.1	INT 3188 FLT 3379	INT 7032 FLT 6948	80	116.0
8x300	600 DDR	2.5-4-3-6 2.9V 1T	561.5	INT 3298 FLT 3567	INT 7199 FLT 7111	79	117.1
9x315 (2.83GHz)	Highest CPU/Mem Performance 630 DDR	2.5-4-3-7 2.9V 1T	642.0	INT 3642 FLT 3905	INT 7820 FLT 7946	72	135.2

In rows 1 to 5, CPU speed is kept at 2.4GHZ and only the Memory Speed is varied. The performance differences you see in that range are a result of Memory Speed and memory timings only.

We have looked at Aida 32 results in the past, and found them very useful in examining read/write performance and memory latency. Aida 32 is now available as Everest Home Edition, a free download from www.lavalys.com.

Everest 1.51 Patriot PC3200+XLBK (DDR400/533) 2x512Mb Double-Bank
CPU Ratio at 2.4GHz	Memory Speed	Memory Timings & Voltage	Everest READ MB/s	Everest WRITE MB/s	Everest Latency ns
12x200	400 DDR	2-2-2-6 2.6V 1T	5877	2033	45.8
11x218	436 DDR	2-3-2-6 2.8V 1T	6170	2056	44.6
10x240	480 DDR	2.5-3-3-6 2.8V 1T	6666	2207	44.2
9x267	533 DDR	2.5-3-3-6 2.9V 1T	7209	2325	40.7
8x300	600 DDR	2.5-4-3-6 2.9V 1T	7561	2379	40.4
9x315 (2.83GHz)	Highest CPU/Mem Performance 630 DDR	2.5-4-3-7 2.9V 1T	8310	3321	35.2

While maintaining a constant CPU Speed of 2.4GHz, we measured the impact of increasing the Memory Speed from 200 to 300, a 50% increase. Memory Read performance increased about 29% with this 50% speed increase, while Memory Write performance improved by just 17%. Latency showed a reduction or speedup of about 12%. With any TCCD memory, Memory Read/Write/Latency benchmarks are also impacted by the slower memory timings required at higher speeds.