Slow memory throughput
I recently assembled a system for a family member and everything appears to be working flawlessly... except that the memory throughput is very slow compared to my (comparable) Pentium 4 system. The new system has an ASROCK K7S41GX (http://www.asrockamerica.com/Products/K7S41GX.htm), an Athlon 2400+ CPU, and 512 Mushkin Blue PC2100 memory (tweaked to highest CAS etc. timings allowed in BIOS). The CPU is the 266MHz CPU FSB version, and I've verified that the memory is running at 133(266) MHz. I even cranked it up to 166(333) because the Mushkin memory can handle it without barfing, but even that didn't help much. The system's PCMark2002 memory benchmark score is only about 2600, whereas my Pentium 4 system with a 2.4-GHz P4 at 400 MHz FSB and 512MB PC2100 scores about 5300. That's disappointing, because I thought that the two systems would at least be in the same solar system WRT performance. Is the SiS chipset to blame? Is there any other setting that I should try in the BIOS. Any help would be appreciated. |
Hackworth wrote:
I recently assembled a system for a family member and everything appears to be working flawlessly... except that the memory throughput is very slow compared to my (comparable) Pentium 4 system. The new system has an ASROCK K7S41GX (http://www.asrockamerica.com/Products/K7S41GX.htm), an Athlon 2400+ CPU, and 512 Mushkin Blue PC2100 memory (tweaked to highest CAS etc. timings allowed in BIOS). The CPU is the 266MHz CPU FSB version, and I've verified that the memory is running at 133(266) MHz. I even cranked it up to 166(333) because the Mushkin memory can handle it without barfing, but even that didn't help much. The system's PCMark2002 memory benchmark score is only about 2600, whereas my Pentium 4 system with a 2.4-GHz P4 at 400 MHz FSB and 512MB PC2100 scores about 5300. That's disappointing, because I thought that the two systems would at least be in the same solar system WRT performance. Is the SiS chipset to blame? Is there any other setting that I should try in the BIOS. Any help would be appreciated. Memory data goes through the FSB and the P4 system is running it 1.5 times faster. That alone would account for about 4000 vs 2600. The rest is probably different due to memory timing/variation and chipset performance. Btw, if by "highest CAS" you mean the 'largest' number then you're working backwards. Those numbers are DELAY and you'd want the lowest that is stable. |
"David Maynard" wrote in message ... Hackworth wrote: I recently assembled a system for a family member and everything appears to be working flawlessly... except that the memory throughput is very slow compared to my (comparable) Pentium 4 system. The new system has an ASROCK K7S41GX (http://www.asrockamerica.com/Products/K7S41GX.htm), an Athlon 2400+ CPU, and 512 Mushkin Blue PC2100 memory (tweaked to highest CAS etc. timings allowed in BIOS). The CPU is the 266MHz CPU FSB version, and I've verified that the memory is running at 133(266) MHz. I even cranked it up to 166(333) because the Mushkin memory can handle it without barfing, but even that didn't help much. The system's PCMark2002 memory benchmark score is only about 2600, whereas my Pentium 4 system with a 2.4-GHz P4 at 400 MHz FSB and 512MB PC2100 scores about 5300. That's disappointing, because I thought that the two systems would at least be in the same solar system WRT performance. Is the SiS chipset to blame? Is there any other setting that I should try in the BIOS. Any help would be appreciated. Memory data goes through the FSB and the P4 system is running it 1.5 times faster. That alone would account for about 4000 vs 2600. The rest is probably different due to memory timing/variation and chipset performance. Btw, if by "highest CAS" you mean the 'largest' number then you're working backwards. Those numbers are DELAY and you'd want the lowest that is stable. Ah... that's true. And the rest is probably due to the relatively crappy chipset. And yes, I meant "fastest" (i.e., lowest) CAS timings. Mea culpa. |
Hackworth wrote:
"David Maynard" wrote in message ... Hackworth wrote: I recently assembled a system for a family member and everything appears to be working flawlessly... except that the memory throughput is very slow compared to my (comparable) Pentium 4 system. The new system has an ASROCK K7S41GX (http://www.asrockamerica.com/Products/K7S41GX.htm), an Athlon 2400+ CPU, and 512 Mushkin Blue PC2100 memory (tweaked to highest CAS etc. timings allowed in BIOS). The CPU is the 266MHz CPU FSB version, and I've verified that the memory is running at 133(266) MHz. I even cranked it up to 166(333) because the Mushkin memory can handle it without barfing, but even that didn't help much. The system's PCMark2002 memory benchmark score is only about 2600, whereas my Pentium 4 system with a 2.4-GHz P4 at 400 MHz FSB and 512MB PC2100 scores about 5300. That's disappointing, because I thought that the two systems would at least be in the same solar system WRT performance. Is the SiS chipset to blame? Is there any other setting that I should try in the BIOS. Any help would be appreciated. Memory data goes through the FSB and the P4 system is running it 1.5 times faster. That alone would account for about 4000 vs 2600. The rest is probably different due to memory timing/variation and chipset performance. Btw, if by "highest CAS" you mean the 'largest' number then you're working backwards. Those numbers are DELAY and you'd want the lowest that is stable. Ah... that's true. And the rest is probably due to the relatively crappy chipset. Holy Toledo. Well, I didn't look before and the 'GX' just now hit me. It's the built-in shared memory display that's sucking the rest. And yes, I meant "fastest" (i.e., lowest) CAS timings. Mea culpa. Ok. Just checking. |
All times are GMT +1. The time now is 11:55 AM. |
Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
HardwareBanter.com