are the dfi ut3 oc's lies?

[queuetrip]

I just bought this motherboard, and noticed that when you compare the memtest 86 3.2 memory bandwidth read -out, it does not match the rated bandwidth of the ddr. (the displayed BW is about 20% less)

SO the overclock numbers you get on this board are not real because the resulting bandwidth does not match the memtest bandwidth readout (sisoft I dont know about)

i.e. on two sticks of ocz ddr 3200 platinum edition (ocz400512eldcpe-k) you will not see 1600 or anything close. it will be something like 1267 MB/ second and if you tweek the genis bios settings it will go to about 1320 MB's stable (memtest 3.2 test 5 has no errors)

for me, I think this board runs all ram at 333ddr (while you can OC...

On the msi neo FIS2 (s754 msi-6702) memtest is around 1543 when a 3000+ (130u 512cache) is used.
(and using 1 ds ocz platinum and 2 ss ocz platinum.)


has anyone else noticed this? (what was the memtest bandwidth read out for the 616ddr or 308 fsb overclock?)

also, the dfi ut3 can not run 2 ds sticks at greater than 333 ddr. (read the pdf manual section on the ddr modules) or 1 ds and 2 ss sticks.

(it could be the new 3400+ that I am using but I doubt it...)

 

[queuetrip]

more info on the differences between the msi and dfi memtest 86 3.2 bandwidths....

Themsi neo-fis2r and 1024MB ocz platinum (1 ocz400512elpe and ocz400512eldcpe-k (2 x 256mb) and 2-3-2-7 400ddr will show a bandwidth of 1628 MB/s with an a64 3000+ {ada3000aep4ap] (fsb 200) (1t timing)


But change the processor to an a64 3400+ ada3400aep5ar and bandwidth is 1322 Mb/s

at 2T timing, 1T timing 1432Mb /s


but with the
DFI LANPARTY UT nF3 250Gb and a64 3000+ is not stable with 3 ddr's (because of the 1t timing) but is stable with 2 ddrs ( ocz400512elpe(512) and 1 ocz400512eldcpe-k (256))
the bandwidths are 3000+ (2ddr 200fsb 1376MB/s)

then hange the processor to the 3400+ and you can use 3 ddrs (ocz see above) (214fsb 2-3-2-7, )
1313MB/s stable.

I think that it is the ocz memory, or processor not the dfi mb.

(good things about the dfi... the bios, and the temp controlled fan headers on the cpu and chassis fan header work well.

 

[acivick]

Interesting problem. I get ~1550 MB/s in memtest, but I'm also at 240 FSB/HTT using different timed memory.

In Sisoft, I get about 3600 MB/s. Theoretically, it should be 64x480/8 = 3840 MB/s. Perhaps you should use the Sisoft numbers. If you're at 200 FSB it should be around 3200. If you're really at 333, it should only be around 2700.