Chapter 16: Testing Overclocked Systems

The ASUSTeK P/I-P55T2P4 Rev. 3.0 motherboard with the 82430HX chipset supports increased host bus frequencies of 75 and 83 MHz. In order to estimate the maximum performance you can expect from a computer at higher frequencies, appropriate tests have been performed under Windows 95. Performance was measured using the standard tests: WinStone 96 and WinBench 96 (Fig. 16.1).

Fig. 16.1. Test results

Configuration of the Computer Tested

Motherboard	Asus P/I-P55T2P4 rev 3.0
BIOS	AWARD 4.51PG, #401A0-107
L2 cache (KB), type	512, PB (256 KB on-board + 256 KB CELP)
RAM (KB), type, nsec	32, EDO, 60 nsec
Processor	Intel Pentium-200
Video	Matrox MGA Millennium, with 2 MB RAM
	(1024×768×256×SF×75 Hz)
Hard drive	Quantun Fireball TM 1280AT
Sound card	Vibra 16S
CD-ROM drive, sec	Acer 685A, 8 sec
MB System BIOS Setup	Setup default + PM = disabled

Test Results

Bus frequency, MHz	66	75	83
Frequency multiplier	3.0	3.0	2.5
Internal frequency of the processor, MHz	200	225	208
WB96 Overall	87-88	93-94.4	94.4-95,
WB96 CPU Mark16	357-363	401-408	402-417
WB96 CPU Mark32	358-364	406-408	407-418
WB96 Disk Winmark, thousand b/sec	1,160-1,180	1,180-1,230	1,220-1,250
WB96 Graphics Winmark, million pixels/sec	46.4-46.9	50.3-51.4	50.3-51.5

The following table lists test results for twenty systems overclocked using the technique of increasing the host bus frequency. Tested configurations include various motherboards, processors, and RAMs. The table lists all of the testing data, including information on the rate of data exchange between the CPU and the RAM, L1, and L2 cache memories (columns 2, 3, and 4, respectively). The table also includes information on the type and size of the L1 and L2 cache memories, and the RAM, along with the data on chipsets, processors, etc.

Test Results for Overclocked Systems

Motherboard	RAM MB/sec	Cache L1 Mb/sec	Cache L2 Mb/sec	Chipset	Cache L2 type	Processor	Host bus frequency	RAM

Asus P/I-P55T2P4	57.3	621.6	75.5	Intel Triton VX 430VX	Synchronous Burst Cache 512 KB	IP P54C without MMX 150 MHz	75 MHz	32 MB EDO 60 nsec
Asus P/I-P55T2P4	56.8	892.3	84.2	Intel Triton II 430HX	Pipelined Burst Cache 512 KB	IP P54C without MMX 208 MHz	83 MHz	32 MB EDO 50 nsec
Asus P/I-P55PTTV4	56.6	435.6	116	Intel Triton VX 430VX	Pipelined Burst Cache 512 KB	Cyrix/IBM 6x86-M1 150 MHz	75 MHz	32 MB SDRAM
FIC PT-2010	56.4	428.1	108.2	Intel Triton VX 430VX	Pipelined Burst Cache 512 KB	Cyrix/IBM 6x86-M1 150 MHz	75 MHz	32 MB SDRAM
Shuttle/Spacewalker HOT 557	55.8	949.1	75.6	Intel Triton VX 430VX	Pipelined Burst Cache 512 KB	IP P54C without MMX 222 MHz	75 MHz	32 MB SDRAM 50 nsec
Asus P/I-P55T2P4	55.3	699.3	86.1	Intel Triton II 430HX	Pipelined Burst Cache 512 KB	IP P54C without MMX 166 MHz	83 MHz	16 MB EDO 60 nsec
Asus P/I-P55T2P4	55.3	699.3	86.1	Intel Triton II 430HX	Pipelined Burst Cache 512 KB	IP P54C without MMX 166 MHz	83 MHz	16 MB EDO 60 nsec
Asus P/I-P55T2P4	54.3	700.3	83.1	Intel Triton II 430HX	Pipelined Burst Cache 512 KB	IP P54C without MMX 166 MHz	83 MHz	64 MB EDO 60 nsec
Asus P/I-P55T2P4	54.2	703.3	84.2	Intel Triton II 430HX	Pipelined Burst Cache 512 KB	IP P54C without MMX 166 MHz	83 MHz	32 MB EDO 60 nsec
Asus P/I-P55T2P4	54.2	698.2	83.8	Intel Triton II 430HX	Pipelined Burst Cache 256 KB	IP P54C without MMX 166 MHz	83 MHz	32 MB EDO 60 nsec
fki SL586 VT II	53.1	426.7	76.4	VIA 580 VP Apollo VP1	Pipelined Burst Cache 512 KB	Cyrix/IBM 6x86-M1	75 MHz	16 MB EDO 60 nsec
Supermicro P6DOF 2xP6	52.9	1016.3	315.5	Intel Orion 450GX	CPU Intermal Cache 256 KB	IP Pro 256 KB L2 200 MHz	66 MHz	128 MB FPM 60 nsec
Asus P/I-P55T2P4	52.7	812.9	78.2	Intel Triton II 430HX	Pipelined Burst Cache 512 KB	IP P54C without MMX 187.5 MHz	75 MHz	64 MB EDO 55 nsec
Asus P/I-P55T2P4	52.2	893.3	84.1	Intel Triton II 430HX	Pipelined Burst Cache 512 KB	IP P54C without MMX 208 MHz	83 MHz	64 MB EDO 60 nsec
Asus P/I-P55T2P4	52.1	701	84.1	Intel Triton II 430HX	Pipelined Burst Cache 512 KB	IP P54C without MMX 166 MHz	83 MHz	16 MB EDO RAM 60 nsec
QDI P5i430VX-250DM	52.1	792.8	75.5	Intel Triton VX 430VX	Pipelined Burst Cache 256 KB	IP P54C without MMX 187.5 MHz	75 MHz	32 MB SDRAM
Pine PT-7502	52	952.2	75.6	Intel Triton VX 430VX	Pipelined Burst Cache 256 KB	IP P54C without MMX 225 MHz	75 MHz	16 MB SDRAM
Asus P/I-P55T2P4	51.2	705.5	84.1	Intel Triton II 430HX	Pipelined Burst Cache 512 KB	IP P54C without MMX 166 MHz	83 MHz	32 FPM 60 nsec
Asus P/I-P55T2P4	50.7	623.6	75.2	Intel Triton II 430HX	Pipelined Burst Cache 256 KB	IP P54C without MMX 150 MHz	75 MHz	16 EDO 60 msec
Asus P/I-P55T2P4	50.6	789.1	75.3	Intel Triton II 430HX	Pipelined Burst Cache 256 KB	IP P54C without MMX 187.5 MHz	75 MHz	64 EDO 60 msec

PC Overclocking, Optimization, and Tuning - 2th Edition

Chapter 16: Testing Overclocked Systems