Any 8800GT cards with Samsung memory chips?

D

DG25

Gawd
Joined
Dec 15, 2006
Messages
550
As the title says. I want to stay away from the problematic Qimonda chips.
 
Where have you heard that the Qimonda chips are problematic?

If anything I'd be wary of Samsung chips, they haven't exactly instilled a lot of confidence in their customers lately since the whole 7900GT faulty memory fiasco....
 
http://forums.ocia.net/viewtopic.php?t=4176

Also check the gigabyte 8800gt thread here: http://www.hardforum.com/showthread.php?t=1242588&page=9

Also this:

"It is getting very obvious the Vmem (or probably more specifically the memory Vddq) is to high
for the Qimonda chips even though 2.00 nominal is what Qimonda specs for both memory Vdd
and Vddq with the .80 and 1.0ns speed bin chips and is what the GT's run out of the box.

Qimonda Specs 1.80 nominal for Vdd/Vddq on the 1.1, 1.2 and 1.4ns chips so they just jacked
the voltage up to get a .80 and 1.0ns speed bin on the higher speed rated chips (they all come
off the same FAB wafers). Note the practice increasing the voltage to get higher rated speed
bin chips is normal and both Samsung and Hynix do it as well.

It is known that running the I/O buffer voltage (Vddq) can hurt a memory chip over time and
that would be exacerbated and could be rapidly accelerated by running at higher frequancies
at the same time. Normally 2.0 Vmem wouldn't be considered all that high...at least with
Samsung or Hynix DDR3 chips anyway.

It is within the realm of possibility the combination of the two at the same time (higher
frequency and higher Vmem) could be hurting the Qimonda chips rapidly (although there is
no proof of that in the public domain) and that is what is being referred to on the web about
running an 8800GT's memory over 1ghz killing them. If that is so then in this case the root
cause isn't higher frequency, it is the higher Vmem.

It kinda looks like Qimonda may possibly have missed something during certification/
speed bin testing of the .80 and 1.0ns chips and nVidia in memory chip qualification testing
(like running an old benchmark with a test that point it out rapidly)."
Click to expand...

From here: http://www.ocforums.com/showthread.php?p=5381563
 
Almost all of the early run GT's were Qimonda chips. Now there are cards across most manufacturers popping up with the Samsung and Hynix chips.
 
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