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AMD FX (Bulldozer) Owners Club! - Page 351

post #3501 of 8112
Quote:
Originally Posted by ghostter View Post

Maybe you will need special cooling for the VRMs aswell, with this power consumption they'll get very very hot.

Agreed, I've seem V-Core 1 on thermal radar get as high as 80c under Prime. I've been looking for a Sabertooth 990fx specific water block, but I am yet to see one.
post #3502 of 8112
Quote:
Originally Posted by rrohbeck View Post

Quote:
Originally Posted by Tslm View Post

Piledriver can't come soon enough tbh, the heat zambezi produces is pretty disgusting. Any voltage increase sends the temps soaring and makes it a real pain in the ass. The only real walls with this chip are heat walls.
Sandy Bridge ocing was a breeze compared to this crap.

Amen. My 8150 runs very nicely, almost 4.5GHz at just slightly above stock voltage as long as I can keep the temperature down. Temperature rises, I need more voltage to keep those pesky Prime95 errors away, temperature rises even more. I was able to save some power by keeping the CPUNB voltage down but now that I'm pushing my RAM I need 1.45V. Finely tuned I can just barely get to 4.6GHz on air. I'm getting another faster fan (I already have 3 Deltas on the NH-D14, now I'm getting a 260cfm San Ace.)

Yeah this the problem I have. I can get to say 4.6GHz @ 1.4v stable in every game with core temps sitting at around 61 exactly (I leave my memory at 1600MHz with pretty loose timings), but if I run prime it gets so much hotter that it becomes unstable and prime fails once the cores move past 70c. The only way to solve that is voltage as you said...and yeah pretty quickly you're sitting almost at thermal shutdown haha.

I've decided to drop mine back to 4.3GHz which seems to only require 1.33v and which means the cores sit at a pretty cozy 50c during gaming. Prime it gets much warmer but was stable for an hour before I realised I dont play prime and decided an hour was good enough for me laughingsmiley.gif
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post #3503 of 8112

Is this for Real

 

The B3 8170
http://forums.bit-tech.net/showpost.php ... stcount=40

AMD FX – Series B3 revision is more than just a basic stepping:
I have direct knowledge of a possible B3 revision for the AMD FX line of CPUs. I cannot disclose performance projections at this time, but be assured AMDs processor division is working vigorously on a (B3) stepping revision with minor architectural tweaks. The base architecture will not be changed at this time.

See Other thoughts below.
Slower than the Phenom II X6 CPUs in a Clock for clock review(s). B3 revision coming to resolve this issue among a few more.

Other Thoughts: Within the B3 stepping revision, expect minor tweaks to the following:
1) L1, L2 and L3 latencies
2) Cache Thrashing Issues
3) Modified Algorithms for Branch Prediction
4) Healthy Bump in Processor Frequency
5) Slight Frequency increase via NB Controller
6) “Total Intelligent Control†For example programs and applications should look at the module design approach and the ability for the processor to intelligently turn off and/or turn on specific cores that it believes is hindering performance for maximum performance. (May be for Socket FM2, not sure at this time).
7) Power will be improved but not my much. We will have to wait for Socket FM2 or a future B4 revision for the AM3+ platform for better power efficiency especially when Over-clocked.

Based on what i can read here maybe the 8170 is another 3-5% better per core, and if you join the other 3-5% due to OS fixes, and ~9% clock, we are talking about 15-20% better than the FX unpatched system or 10-15% better than with a patched one.

No wonder AMD has no hurry with vishera, probably only way after 2H and going into most of 2013. Nevertheless i believe the 8170 is EOL of current line for "top", after it only vishera.

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post #3504 of 8112
Quote:
Originally Posted by Tweeky View Post

Is this for Real


If it is for real, all 8150 owners should get a trade in upgrade option.
post #3505 of 8112
Quote:
Originally Posted by almstsobur View Post

Quote:
Originally Posted by Tweeky View Post

Is this for Real


If it is for real, all 8150 owners should get a trade in upgrade option.

Why would they offer that? My 8150 works perfectly fine, meets all benchmark results leaked before release, nothing wrong with the processor. I could see if the 8150's were actually faulty, but they're not.

They have no way of knowing if you overclocked it or not so they wouldn't be able to re-sale them at anywhere near cost, would be a huge loss of money for them.
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post #3506 of 8112
Quote:
Originally Posted by axipher View Post

Why would they offer that? My 8150 works perfectly fine, meets all benchmark results leaked before release, nothing wrong with the processor. I could see if the 8150's were actually faulty, but they're not.
They have no way of knowing if you overclocked it or not so they wouldn't be able to re-sale them at anywhere near cost, would be a huge loss of money for them.

This is why

1) L1, L2 and L3 latencies
2) Cache Thrashing Issues
3) Modified Algorithms for Branch Prediction

Sounds like a flawed release to me (if the above is real and fixed in a new stepping). Frequency bumps are expected. major tweaks to put single core performance above that of the X6 processors is fixing flaws IMO.

Plus who cares if a chip has been OC'ed. It in NO way inhibits the life of the CPU as long as the cooling is adequate. Over heating or Over-volting damages CPU's, never has overclocking done so. I'm not saying a free upgrade, I'm saying pay the difference upgrade.

if AMD didn't want us to overclock, why would this even exist? http://sites.amd.com/us/Documents/AMD_FX_Performance_Tuning_Guide.pdf
Edited by almstsobur - 2/6/12 at 1:20pm
post #3507 of 8112
Development goes on - that is why there are steppings. You get what you get when you buy. There are no free undates. If I buy a B3 and AMD comes out with a B4, should I get a free upgrade for that too? Doesn't make any sense.

There has certainly been plenty of FX info. available for anyone who wanted more info. prior to purchase so I think even suggesting a free upgrade is silly.
post #3508 of 8112
Quote:
Originally Posted by Tweeky View Post

Is this for Real

if it sounds too good to be true it probably is.
just my .02

edit: mmarq (the guy that info came from re. not a regular stepping) seems to have some "unusual" beliefs. judging by his posts in a thread at amdzone, he thinks the laws of thermodynamics are not 'laws' at all and there are engines that run without any fuel. wth.gif
http://www.amdzone.com/phpbb3/viewtopic.php?f=1&t=139039
basically he is part of the tinfoil hat crowd. thumb.gif
Edited by nub - 2/6/12 at 3:56pm
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post #3509 of 8112
Quote:
Originally Posted by Tslm View Post

Yeah this the problem I have. I can get to say 4.6GHz @ 1.4v stable in every game with core temps sitting at around 61 exactly (I leave my memory at 1600MHz with pretty loose timings), but if I run prime it gets so much hotter that it becomes unstable and prime fails once the cores move past 70c. The only way to solve that is voltage as you said...and yeah pretty quickly you're sitting almost at thermal shutdown haha.
I've decided to drop mine back to 4.3GHz which seems to only require 1.33v and which means the cores sit at a pretty cozy 50c during gaming. Prime it gets much warmer but was stable for an hour before I realised I dont play prime and decided an hour was good enough for me laughingsmiley.gif

What, you don't play prime? Watching it (and the core temp) is the most exciting thing in the world!
I leave it running in the background at low priority for long term tests and fine tuning so it can run for an hour after I adjusted the voltage or clock a little.
Under Linux I found that if I run two integer-only threads in addition to mprime's (the Linux version) small FFTs it creates even more heat. I just run
Code:
perl -e 'for(;;){}'
in two terminals. That easily increases the temperature by 4 degrees but that's about the max I've been able to create. 4.56GHz at 76 core temp is stable under these conditions, yay!
Bottom line: Need moar cooling.
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post #3510 of 8112
Quote:
Originally Posted by AMD4ME View Post

Development goes on - that is why there are steppings. You get what you get when you buy. There are no free undates. If I buy a B3 and AMD comes out with a B4, should I get a free upgrade for that too? Doesn't make any sense.
There has certainly been plenty of FX info. available for anyone who wanted more info. prior to purchase so I think even suggesting a free upgrade is silly.

I never said anything about free. I said a pay the difference upgrade policy. I look at it almost like a vehicle recall. If you pay $260 for a CPU and a month later it is magically improved by 15% or more ... That means they fixed issue's, problems with the design. I'm not saying they will, but in this case I think the right thing to do it provide a "trade up" type program to the new and improved version at a discounted cost with a trade of your existing chip. If I bought a new car and a month later Toyota said "ohh we fixed something, that same car now gets an extra 8MPG" ..... It's the same make, model, year... just "revised" I.E. fixed.
Edited by almstsobur - 2/6/12 at 4:03pm
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