8120 after 1 week

[Augustus]

I should have the worst 8120 ever, no matter what voltage used I can't pass 4.3Ghz, it freezes when I try anything over 1.36v

It has a 1,26 VID, tried the turbo trick, etc, I have a Corsair AX850 singlerail and 2x 6870 stock clocked... wtf am I doing wrong?

If you are using the MB in your sig then what you've done wrong is the same thing i have.....buy the 990FXA-UD3. I'm hoping that it gets a better bios soon it is really bad.

The memory timings are all over the place (can't run my ram at standard timings/speed), dividers royally borked and the damn thing even changes it's own settings...i kid you not. I've gone into bios after serious errors in Prime only to find the bios has set itself back to stock CPU VID when i had set it higher. It sometimes has the turbo CPU VID (1.425) stated as the stock CPU VID (1.325) meaning you have to remember to add volts based on what you know the stock VID is rather than what the bios tells you it is.

I've gotten an 8120 and i can't seem to get higher than 4500 on this board....with a stock CPU VID of 1.325. The board wouldn't clock a known good Phenom either and also hasn't set the memory timings correctly since day one either...even though the Phenom/memory works perfectly if i then try it on the 890GX Giga board i've still got.

Edit: Forgot to mention that the board also sets INSANE voltages under load.......have seen 1.425 (set in bios) getting up to 1.54 (automatically) while stressing!!! No wonder the heat ramps up VERY quickly.

I really do think that one of the things that has added to AMD's woes here is having far too tight a schedule for releasing FX so the boards/bios are immature. As we've seen from the heady days of DFI NF4 the bios is critical.

What's out there seems to be really bad but i think it's a perfect storm of bad GloFo process, bad boards/bios (Gigabyte mave many revisions of their 990 boards already) and software that just doesn't work right with this approach all making FX look worse than the chip really is.

I'm not doubting that the CPU doesn't have some kinks that need to be straightened out but all these wierd results and plain having to f**k about to just make it work suggests to me there's more to this than just the CPU.

[Swanie]

Ja broer. No stock in SA yet. ETA only about 10th may even the 12th. Hopefully we get the good chips.

Yes it frustrating as the date gets pushed back all the time from the dealers. rectron and pinnacle

[PolRoger]

My 8150 has a 1.2875 VID and doesn't seem like too much of a leaker. I'm running on air (TR Archon with push/pull) and the chip seems to need ~1.4v for 4.6Ghz and ~1.45v for 4.7Ghz. I've been "crunching" 8-cores 100% at 4.6GHz "daily" when not benching and the temps are quite manageable.

I was exploring some higher dram speeds today... ran even higher but with more relaxed timings... however these settings seem to give me the best score so far.

[P.A.D>]

Anyone have any recommendations for a optimal cpu northbridge voltage for the 8120?

[charged3800z24]

I tried some runs with stock NB and some with 2600NB, I didn't see a blip of improvement in CB11. I did see some in winrar. 2400NB needs 1.2v, 2600NB needed 1.45v. i'm oing to stick to 2400NB with this chip.

[Barr3l Rid3r]

Depending on the App, I have seen performance go up. Now if I am close to unstable, I see the benches run slower.



That;s odd. What are your temps using the latest HWMonitor and looking and CPU temp not cores?

30C and under 60 Full load.... Its watercooled whatt a crap

[Daveburt714]

Anyone have any recommendations for a optimal cpu northbridge voltage for the 8120?

Hey PAD, from what I've seen so far every chip is different....
The one common thing concerning the IMC on FX seems to be the fact that it doesn't offer latencies as tight as Thuban.
That being said, the throughput is usually better!

My chip is happy with IMC v's between 1.20 & 1.25....
The best advise would probably be to take things slow (with v's) and see what yours likes.

EDIT: Also, don't expect to get IMC clocks >2700mhz.
Most Thubans were good around 3ghz. Most FX chips are lucky to find stability ~2600...
In general, the throughput of FX is MUCH better though, even @ lower clocks...

[gOtVoltage]

Anyone have any recommendations for a optimal cpu northbridge voltage for the 8120?

1.25v to 1.3v will be enuff.
you wont see much over 2600nb.

The IMC likes lower NB with higher and tighter Ram freqencies compared to Thurb. 2600nb and 1.35v max is when i ran 5200mhz on my FX 6100.

Youll be surprized on little Volts you actually have to give these chips. I just crank it cause i can

[wez]

Anyone have any recommendations for a optimal cpu northbridge voltage for the 8120?

I run mine at stock volt for ~2600mhz. Have tried over ~1.35v but it didn't offer any scaling whatsoever.

I tried some runs with stock NB and some with 2600NB, I didn't see a blip of improvement in CB11. I did see some in winrar. 2400NB needs 1.2v, 2600NB needed 1.45v. i'm oing to stick to 2400NB with this chip.

Wow, I guess my nb is pretty nice then :O

[PolRoger]

With my chip and ~2200Mhz NB I usually can run stock or with a slight bump but for ~2600Mhz NB along with high dram speeds I've run as high as ~1.2625v. My cpu/nb voltage seems to overvolt under load so the actual voltage is reading higher with a DMM.


Edit: @Daveburt...
Nice job on your "8.55" Cinebench run.

[charged3800z24]

I run mine at stock volt for ~2600mhz. Have tried over ~1.35v but it didn't offer any scaling whatsoever.

Wow, I guess my nb is pretty nice then :O

I got mt chip about the same time from Newegg when Dave got his, I was hoping to have same batch. Must not matter for FX chips cause mine is not like any of the ones on here. I may get another one and see if it is any better.

[Barr3l Rid3r]

If you are using the MB in your sig then what you've done wrong is the same thing i have.....buy the 990FXA-UD3. I'm hoping that it gets a better bios soon it is really bad.

The memory timings are all over the place (can't run my ram at standard timings/speed), dividers royally borked and the damn thing even changes it's own settings...i kid you not. I've gone into bios after serious errors in Prime only to find the bios has set itself back to stock CPU VID when i had set it higher. It sometimes has the turbo CPU VID (1.425) stated as the stock CPU VID (1.325) meaning you have to remember to add volts based on what you know the stock VID is rather than what the bios tells you it is.

I've gotten an 8120 and i can't seem to get higher than 4500 on this board....with a stock CPU VID of 1.325. The board wouldn't clock a known good Phenom either and also hasn't set the memory timings correctly since day one either...even though the Phenom/memory works perfectly if i then try it on the 890GX Giga board i've still got.

Edit: Forgot to mention that the board also sets INSANE voltages under load.......have seen 1.425 (set in bios) getting up to 1.54 (automatically) while stressing!!! No wonder the heat ramps up VERY quickly.

I really do think that one of the things that has added to AMD's woes here is having far too tight a schedule for releasing FX so the boards/bios are immature. As we've seen from the heady days of DFI NF4 the bios is critical.

What's out there seems to be really bad but i think it's a perfect storm of bad GloFo process, bad boards/bios (Gigabyte mave many revisions of their 990 boards already) and software that just doesn't work right with this approach all making FX look worse than the chip really is.

I'm not doubting that the CPU doesn't have some kinks that need to be straightened out but all these wierd results and plain having to f**k about to just make it work suggests to me there's more to this than just the CPU.

Very weird, anything I've set instead of 1,28 VID results in a frezee while loading windows...
Stupid board/ CPU

Board worked fine w/ thuban, benching at 4.3Ghz before.

memory is working fine immo



Patriot 2250Mhz C9 testing... Elpida Hyper

[mR Yellow]

Very weird, anything I've set instead of 1,28 VID results in a frezee while loading windows...
Stupid board/ CPU

Board worked fine w/ thuban, benching at 4.3Ghz before.

Patriot 2250Mhz C9 testing... Elpida Hyper

Wait for a new bios update.

[P.A.D>]

Thanks for the input guys, guess I'm not doing that bad then? I got mine up to 2700@1.4 (I think don't quote me @V's) with the chip at 4.9 (six cores only) but it was dumping so much heat into the system that I have to rethink my loop.

[m0n4g3]

Can one of you guys try to see if PhenomMSRTweaker will work with these cpu's?

I'm very tempted to upgrade from my 1090T but still not 100% sure if i want it to run 100% all the time and i hate auto CNQ (can always undervolt more than what it does).

Thanks for any one that is willing to try it!

[Daveburt714]

Can one of you guys try to see if PhenomMSRTweaker will work with these cpu's?

Normally I'm not afraid to be a guinea pig, but this is one case where I don't want to be the first...
This is a whole new uArch and I don't doubt that the registers have changed. To me that makes it a little risky, with the chance of totally unknown results.

I'm with you as far as being a huge fan of MSRTweaker though!
Just not willing to risk it...

I already put a "Shout Out" for kink and didn't get any response.
The guy was a great coder, and the software probably has enough sense not to do any damage, but I'm a wuss...

I'd LOVE to see a version that I knew was safe for the FX chips!

[m0n4g3]

Normally I'm not afraid to be a guinea pig, but this is one case where I don't want to be the first...
This is a whole new uArch and I don't doubt that the registers have changed. To me that makes it a little risky, with the chance of totally unknown results.

I'm with you as far as being a huge fan of MSRTweaker though!
Just not willing to risk it...

I already put a "Shout Out" for kink and didn't get any response.
The guy was a great coder, and the software probably has enough sense not to do any damage, but I'm a wuss...

I'd LOVE to see a version that I knew was safe for the FX chips!

Thanks for the response!

I absolutely love msrtweaker, and if intel had a version that worked with their cpu's rather than having to rely on their stupid speedstep tech... i'd be all over them like a fat kid........ nvm...

[PatRaceTin]

i hope i got low vcore one when some 8120 hit da shelf

[mR Yellow]

Now i'm pissed! Stock of the AMD FX CPUs are only expected to arrive 1 Dec in South Africa.
wonder if this has to be because of bad yields.

[wez]

Normally I'm not afraid to be a guinea pig, but this is one case where I don't want to be the first...
This is a whole new uArch and I don't doubt that the registers have changed. To me that makes it a little risky, with the chance of totally unknown results.

I'm with you as far as being a huge fan of MSRTweaker though!
Just not willing to risk it...

I already put a "Shout Out" for kink and didn't get any response.
The guy was a great coder, and the software probably has enough sense not to do any damage, but I'm a wuss...

I'd LOVE to see a version that I knew was safe for the FX chips!

Seems to work according to this guy
http://www.xtremesystems.org/forums/...=1#post4990027

[Radon]

Now i'm pissed! Stock of the AMD FX CPUs are only expected to arrive 1 Dec in South Africa.
wonder if this has to be because of bad yields.

Chill dude, once you'll get it you'll have so much fun overclocking this beast.

I'm loving my 8150 I also had a 1055T like you, but couldn't crank it much past stock speed. Now I'm rendering in Blender 30% faster than before, the perfect workload for 8 cores and Linux

[Daveburt714]

Seems to work according to this guy
http://www.xtremesystems.org/forums/...=1#post4990027

That's somewhat reassuring wez, the language difference is a little confusing though...

Your pushing me closer to trying it.

[Swanie]

Ye...the ETA gets pushed back every day or so ..

[mR Yellow]

Chill dude, once you'll get it you'll have so much fun overclocking this beast.

I'm loving my 8150 I also had a 1055T like you, but couldn't crank it much past stock speed. Now I'm rendering in Blender 30% faster than before, the perfect workload for 8 cores and Linux

Thanx for encouraging me
My current mobo is also a Sabertooth. How good is the beta bios (0810) with BD?

[charged3800z24]

Dave,

I had to give my board a bath and a scrub to clean all the dried anti-freeze on it. After drying it real good I thought i'd test it pit and put the stock cooler on for grins.
First boot I set 4.4 with stock v's and ran a cinebench. It got near 70*c.... Did you ever try the stock cooler on your chip?