A-Data Vitesta PC4000 bad choice?

i just bought & tested a 2x256MB A-Data Vitesta PC4000 DC-Kit. the modules max out at 270MHz both synchron AND asynchron (tried up to 3.2V) . what do i do wrong? (don't care about my sig...)

should i try to burn-in?

should i better order these chips?:

http://www.cheeep.de/chips.php?op=m...&IDU=20040424103136217.185.148.15&SectionID=9

what would you all recommend me to do???

Thats a pretty good OC already what more could u want..oh yea thats right more MHz!!! just give it a week or to and if they still dont go up past 270 then oh well u still have a good OC

all right.
the errors i got where all in prime. so i tried memtest86 3.1
result: the modules are running 275 (1:1) @ 2.7V stable (3-4-4-8) AND COUNTING! (stock voltage = 2.8V )
CPU also stable @ 3300MHz with stock-vcore (1.525V)

dunno where the errors in prime come from...
haven't tried it after memtest
but i'll keep you up to date.

i love my rig

try upping the voltage to 2.9 and turn off any gat or pat if u can.

i finally found the origin of the errors in prime95: it was the CPU.
the RAM is still running stable (50 passes of test 5 in memtest86) 275MHz @ 2.7V.
i can run all benchmarks except prime95, which reports me rounding errors after some mseconds...
all other benchmarks and testing tools (such as SuperPI for example) run quite fine with a 1.525V-core and 3300MHz. EXCEPT prime95!!!
wtf??? ...

btw, i always disable GAT when overclocking