[OFFICIAL] FX-8320/FX-8350 Vishera Owners Club - Page 286

My 8320 takes 1.456v to be stable at 4.5GHz. If I want 4.6GHz I have to up it to 1.5v and my Antec Kuhler 620 cant hang.

You mean 1.43v right? On the fly, but it didn't crash... Until I tried to lower the voltage...

I may be able to, I don't know. I'm having some sort of power issue when I hit 1.47v, I freeze no matter the frequency. I ran OCCT PSU test with 2 6970s and the CPU at 4.8GHz with 1.46v (stable at 1.43) and the PSU didn't seem to have an issue, meanwhile the ambient in my room rose by like 5C...

It's down to either my board or the CPU now, but at any rate, I did get 5.1GHz stable with 1.43 on 4 cores.

Out of curiosity, what is your stock vcore and cpu/nb v? Mine where 1.325vcore and 1.16 cpu/nb, I found this odd. My brothers chip was 1.4 and 1.25ish I think. I'm looking for patterns by the way.

NB/HT are linked at 2400 right now, i initially had them at 2200 but it doesn't seem to make a difference right now...


200 x 22.5 @ 1.425V = Stable but HIGH temps, 60*C after almost an hour
my mem timings are 9-9-9-24 @ 1600Mhz @1.5v (i have 2x G-Skill 4Gb cards, this is stock setting for them)


I guess i could try setting the multi back to 20 and messing with the bus speed but i've never really had good results with that.... maybe this chip is different, who knows. any more ideas?

I'd really like to hit 4.8, that is my goal for 24/7 if i can get it

EDITED, i remembered wrong
my stock out of the box with cleared CMOS was 1.3375Vcore and 1.16 CPU/NB, very close to yours
Edited by Covert_Death - 11/9/12 at 6:03pm

Stock

1.38Vcore
1.23v nb

But ran
1.4vcore
1.18v nb up 4.5ghz easy when I needed to up nb to 1.23v to get to 4.8ghz and 1.3v for 5ghz.

OK, I'm looking at a blue print for modding my own 620! Thanks for the reply and the pic.

Now I'm agonizing over which motherboard to get for a Vishera!

I've tried an Asus M5A99FX 2.0 and a Gigbyte 990FXA-UD3 (rev. 1.1) and both had issues that made me return them. The Asus wouldn't unlock my current CPU (Phenom II X2) at all, even though I've been using it for 3 years in my Gigabyte GA-MA790X-UDP4 with 4 cores without issue. The Asus also wouldn't even post with my Gigabyte Windforce 7950 flashed with the Windforce 7970 bios (1000MHz core/1375MHz memory). I had to switch the bios back to the original Windforce 7950 900MHz core bios it came with to even post. For me, this second issue with the graphics card was the deal-breaker with the Asus board. I'm now wondering if this problem would exist on any newer (2.0) Asus board.

The Gigabyte board posted no problem with the 7950 card using the 7970 bios () but after some preliminary core unlocking trials, it corrupted my windows installation. I'm going to assume that, for some reason (perhaps the PII X2 550BE chip I have can only run 4 cores stable using its built-in DDR2 memory controller, but is unstable at any speed with the unlocked cores using its DDR3 controller? Does this sound plausible anyone?). I was prepared to overlook the unlocked cores stability issue, since it at least worked with my flashed 7950 card, but I was concerned by the amazing heat coming off of the north bridge chip. Even my old Gigabyte GA-MA790X-UDP4 board had a cool-running north bridge, with a pipe connecting it to the VRM heatsink to share the heat load. The more I read about current Gigabyte boards (from the 990X to the 990FX-UD7) running with boilling hot north bridges, the less I want to buy one.

I am so frustrated, I was EVEN considering buying a cheapo BIOSTAR TA990FXE (I can grab one at a local computer store for $109.99) board, but I've restrained myself, since it has its second PCI-E 16x slot too close to the first one for comfort in a 2 card setup.

Any suggestions? I like the Asus boards, but I'd have to reflash my 7950's bios back down to 'standard' speeds and rely on software overclocking tools, which I don't like. Anybody else have a bios flashed 7950 card working in a Vishera-capable motherboard other than Gigabyte?
Edited by anubis44 - 11/10/12 at 5:53pm

Other than your LLC situation seems to be backwards. I guess see if your chip is 'FSB' motivated. I have seen some awfully high HT ref OC's. Did you find an LLC setting that would do what that graph i posted would do? or close to it? It is possible that 4.5 is all that particular silicon has to offer, but being the higher binned 8350 I am just skeptical

Not finished yet, case or innards, but here it is so far Roofrider:

The 2.2kW Holodeck IV

Beautiful rig there, Red1776, but that fan on your north bridge on your UD7 - that's exactly what I don't want to see. I don't want to see a motherboard that costs over $200 needing a $10 fan custom bolted onto the VRM/northbridge because the heatsinks are inadequate. It smacks of bad design. If Asus can adequately cool their VRMs/northbridge without aftermarket fans, why can't Gigabyte?

Gigabyte is starting to loose my respect at this point, which greatly saddens me, because my current GA-MA790X-UDP4 has been so awesome all these years, and it was about a $130 board for crying out loud. Please say it ain't so, Gigabyte.