Yeah I'm running it 1-1 but with the old bios it was just too unstable so I started running at 5/4 at a higher clock speed but I'm glad to say that the new bios lets me run it at 1-1 now and is extremely stable.
That's a whole bunch of memory bandwidth. Like, about twice as much as my rig gets, plus approximately a crapload more.
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LeonardoWake up and smell the glaciersEagle River, AlaskaIcrontian
edited October 2005
Now here's an interesting test. The DRAM I tested is 1GB (2 X 512) of Kingston HyperX 3500 (see System 1 in signature).
I wanted to compare the bandwidth of it in deployment with System 1's maximum stable overclock. That overclock of 3.7GHz, dual channel, hyperthreading, two instances of Folding@Home, multitasking, is a 16 divider X front side bus of 231 indicated/231.5 actual. To get to that overclock, I have to set the FSB/DRAM divider at 5:4. That setting actually underclocks the RAM to 186MHz, but at the frequency I can run a fairly feisty CL 2.0/2-2-7. OK, with the CPU at 3.7GHz, and the DRAM at 186MHz/CL2-2-2-7, the bandwidth test revealed:
5076/5079
The next was to test the DRAM itself, not in conjunction with a CPU overclock. I set the CPU to default, 3.2GHz, and just cranked up the DRAM frequency, continually backing off timings to reach the maximum. Book maximum (default) is 217MHz. The best stable I could do (2 X Folding, hyperthreading, dual channel, multitasking) was 225MHz/CL2.5-4-4-8. I tried CL3.0 - no difference, no increased DRAM frequency. So, you would expect a significant bandwidth improvement advancing from the underclocked 186MHz to 225MHz, right. Well, here's the result:
5335/5337
That is only a 5% improvement. So, CAS latency and FSB just as significant 'speed' factors as RAM timings? BTW, at 225MHz, CL2.5, the system didn't 'feel' as snappy as at 186 at CL2.0. I found this very interesting.
As my main pursuit with my computers is raw CPU power for Folding, and since the 225 didn't seem to produce any advantage over 186 in web surfing, office applications, and the like, I reset the BIOS for 5:4 frequency - FSB/DRAM.
Previously I ran this HyperX at 200MHz (400DDR) at 400, CL2.0-2-2-6. With the 2.8GHz CPU in system two, with the divider at 5:4, FSB1000(quad 250)/DRAM400, back to the CPU overclock of 3.7GHz.
Comments
Very impressive numbers nonetheless.
kinda weak this evga board is holden me back, ill wait till the next bios, if it still sucks ill get a dfi.
I wanted to compare the bandwidth of it in deployment with System 1's maximum stable overclock. That overclock of 3.7GHz, dual channel, hyperthreading, two instances of Folding@Home, multitasking, is a 16 divider X front side bus of 231 indicated/231.5 actual. To get to that overclock, I have to set the FSB/DRAM divider at 5:4. That setting actually underclocks the RAM to 186MHz, but at the frequency I can run a fairly feisty CL 2.0/2-2-7. OK, with the CPU at 3.7GHz, and the DRAM at 186MHz/CL2-2-2-7, the bandwidth test revealed:
5076/5079
The next was to test the DRAM itself, not in conjunction with a CPU overclock. I set the CPU to default, 3.2GHz, and just cranked up the DRAM frequency, continually backing off timings to reach the maximum. Book maximum (default) is 217MHz. The best stable I could do (2 X Folding, hyperthreading, dual channel, multitasking) was 225MHz/CL2.5-4-4-8. I tried CL3.0 - no difference, no increased DRAM frequency. So, you would expect a significant bandwidth improvement advancing from the underclocked 186MHz to 225MHz, right. Well, here's the result:
5335/5337
That is only a 5% improvement. So, CAS latency and FSB just as significant 'speed' factors as RAM timings? BTW, at 225MHz, CL2.5, the system didn't 'feel' as snappy as at 186 at CL2.0. I found this very interesting.
As my main pursuit with my computers is raw CPU power for Folding, and since the 225 didn't seem to produce any advantage over 186 in web surfing, office applications, and the like, I reset the BIOS for 5:4 frequency - FSB/DRAM.
Previously I ran this HyperX at 200MHz (400DDR) at 400, CL2.0-2-2-6. With the 2.8GHz CPU in system two, with the divider at 5:4, FSB1000(quad 250)/DRAM400, back to the CPU overclock of 3.7GHz.
Here's my uber BH-5 at work.. Too bad my CPU is stretched to it's limit at 1.6V. I think this is pretty impressive bandwidth for only 2.7GHz
271MHz, 1.5-2-2-0 1T
Someone smoke this score (waiting for Isevald)