• Some users have recently had their accounts hijacked. It seems that the now defunct EVGA forums might have compromised your password there and seems many are using the same PW here. We would suggest you UPDATE YOUR PASSWORD and TURN ON 2FA for your account here to further secure it. None of the compromised accounts had 2FA turned on.
    Once you have enabled 2FA, your account will be updated soon to show a badge, letting other members know that you use 2FA to protect your account. This should be beneficial for everyone that uses FSFT.

IL A1 chips... compatibility?

K

knopflerbruce

Limp Gawd
Joined
Nov 8, 2007
Messages
172
I grabbed some A1 Interlagos chips off ebay, just for fun. Has anyone tried these in any SM 4P boards? I too a chance, as the seller couldn't guarantee anything - though I find it strange if they work in the KGPE-D16 and not in any 4P SM boards.

Also, if there are issues, is it possible that putting a B-rev chip in socket 0 will solve everything?
 
with steppings a letter change means that multiple layers of silicon has been changed, so a and b chips are very different. I believe mobos won't even boot a1's anymore as they have been removed from the bios.
 
A1 chips are generally flaky. You may get a good one, you may get a bad one.

Statistically:
- stability issues with Tyan [vide: big NB watchdog timer thread]
- SM -- when they work, they work well

Not sure about ASUS.
 
It took a while, needed to get a new board. No stress test completed yet, but I tested 4 A1's (3x 1.6Ghz, 1x 1.8GHz) in a H8QGL-IF and the board POSTs just fine, seeing all 16 sticks of memory. Looking good!
 
knopflerbruce said:
It took a while, needed to get a new board. No stress test completed yet, but I tested 4 A1's (3x 1.6Ghz, 1x 1.8GHz) in a H8QGL-IF and the board POSTs just fine, seeing all 16 sticks of memory. Looking good!
Click to expand...

wonder what they will do under ln2 :rolleyes:
I look forward to your submission :D
 
Not sure if it's really worth it to revive this thread once pr month, but anyway... Tested some chips in my ASUS KGPE-D16. They work... fairly well. Main issue seems to be memory (or maybe it's NB? Not sure). I can run any benchmark - no issues at all, with one exception... Hyperpi 32m with 16 threads. Now, a single 32m needs roughly 265mb or memory, so in total we're talking about 4.2GB RAM used. I tried to OC the CPUs by upping the multiplier, and though they clock worse than B1, nothing got less stable when running at 3GHz instead of 1.8.

From what I recall, f@h only needs about 2-2.5GB. If I'm lucky, I can still fold. I do have a Tyan S8812 coming my way, too - will test when it arrives. I'll also reduce the # of channels on this ASUS, and try the inner set of slots tomorrow. Would be great if these worked... great performance for the cost. I can't find a used 3930k for the price I paid for 4 pieces... :)

Maybe I need ECC sticks? Just using random desktop sticks. Fully stable on MC and the B1 4P that's been running for months already.
 
I gain stability by dropping channels and lowering the clocks, but nmothing is fully stable. Maybe I need some proper ECC ram...
 
I will... but thought this thread would be interesting for others as well, as teh A1's are usually cheap :)

Anyway, I noticed something interesting that I forgot to post. When I set frequencies in PSCheck (I use Win 7/Server 2k8 for benchmarking and stuff) the settings got applied as stock frequencies - the POST screen said 32 cores and 3.2GHz. I expected these changes to be changed while loading windows at best. It doesn't seem like Magny Cours behaves the same way... unless I accidentally did something in PSCheck.
 
10-4 they are incredibly quirky chips.

Not sure if I tried them with ecc
I have some that I can try.
 
And if I'm not mistaken, you never got these to work 100%, right? :p I don't think I'll buy these again.
 
Correct... I have suggested everyone stay far away from them...
some have listened... :D

Doesn't mean I don't have a handful of them...
 
I've got 4 or 5. Didn't pay alot, though... about $400 for all of them. Maybe they work in the S8812 I bought a few days ago.
 
You must log in or register to reply here.
Back
Top