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[Coolaler] AMD Piledriver FX Vishera Engineering Sample Benchmarks - Page 55

post #541 of 636
I have kind of just watched all the FX 8350 alleged engineering samples come out over the last week or so and honestly on study it looks as fake and poor a photoshopping as it can get, then you look at the source and you see OBR, serial Intel and Nvidia fanboi who blogs utter drivel to get hits. I will put my neck out on the block and say everything including these engineering samples are fake.

It was AMD officially that stated the metal level changes from Zambezi to Vishera, that would fundamentally make the die setup different they look exactly the same. How can Vishera be Zambezi family when they are designated different family names, irrespective of Vishera merely being a rework on Zambezi, it is still nevertheless Vishera and not Zambezi.

Then we go to dear Cinebench benches, when has AMD ever used a 4C/8T catagorization of its Flagship processors, particularly how hypercritical they were of Intels HT ~ SMT lite. If you can't photoshop well get someone who can.
post #542 of 636
Quote:
Typical result of 5+ GHz on air/water and stable? That assertion would not reflect the reality I know.

yes, if you know what your doing 5ghz+ is not hard to do, at least on the higher binned parts. Such as 4170/ 6200/8150. Fx processors have trouble with Heat just like the phenom 2's/ thuban did. Most users just jack up the voltage to achieve a higher overclock. While yes you commonly need more voltage to run higher clocks. With the Fx processors higher voltage increases the TDP and thus more heat is created, and is harder to keep cool. On High end air you really want to be below 50c full load for best clocks. Under water you can get lower and allow for more voltage to be used. In overclocking the FX cpu finding the voltage wall is critical. Ie how much voltage does it take your chip to run at 800mhz. How much voltage does it need to run at 1000mhz.. The cpu's scale with voltage and clocks till you hit your voltage wall. Then the voltage much be increase more and more to get higher clocks.

Since todays cpu's have so many controllers built into the cpu itself raising just the cpu vcore will still limit your overclock. Voltage to the northbridge and memory controllers also need to be adjusted.
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post #543 of 636
Quote:
Originally Posted by Sarinaide View Post

I have kind of just watched all the FX 8350 alleged engineering samples come out over the last week or so and honestly on study it looks as fake and poor a photoshopping as it can get, then you look at the source and you see OBR, serial Intel and Nvidia fanboi who blogs utter drivel to get hits. I will put my neck out on the block and say everything including these engineering samples are fake.

It was AMD officially that stated the metal level changes from Zambezi to Vishera, that would fundamentally make the die setup different they look exactly the same. How can Vishera be Zambezi family when they are designated different family names, irrespective of Vishera merely being a rework on Zambezi, it is still nevertheless Vishera and not Zambezi.

Then we go to dear Cinebench benches, when has AMD ever used a 4C/8T catagorization of its Flagship processors, particularly how hypercritical they were of Intels HT ~ SMT lite. If you can't photoshop well get someone who can.

I have no idea on the results, but those die-shots are definitely fake IMO, just photoshopped BD.
Quote:
Originally Posted by ebduncan View Post

Quote:
Typical result of 5+ GHz on air/water and stable? That assertion would not reflect the reality I know.

yes, if you know what your doing 5ghz+ is not hard to do, at least on the higher binned parts. Such as 4170/ 6200/8150. Fx processors have trouble with Heat just like the phenom 2's/ thuban did. Most users just jack up the voltage to achieve a higher overclock. While yes you commonly need more voltage to run higher clocks. With the Fx processors higher voltage increases the TDP and thus more heat is created, and is harder to keep cool. On High end air you really want to be below 50c full load for best clocks. Under water you can get lower and allow for more voltage to be used. In overclocking the FX cpu finding the voltage wall is critical. Ie how much voltage does it take your chip to run at 800mhz. How much voltage does it need to run at 1000mhz.. The cpu's scale with voltage and clocks till you hit your voltage wall. Then the voltage much be increase more and more to get higher clocks.

Since todays cpu's have so many controllers built into the cpu itself raising just the cpu vcore will still limit your overclock. Voltage to the northbridge and memory controllers also need to be adjusted.

AMDs a lot funner to clock than Intel IMO, you can go a lot of ways to the same thing, like you mentioned BD and Phenom II both clock better with lower temperatures than more voltage, you do need to raise the voltage but if a chip is unstable at 5Ghz (for example) it might all be down to being 5c too hot and not the voltage. I've seen quite a few times where Phenom II has become unstable at a certain speed merely because it's summer all of a sudden.
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post #544 of 636
Quote:
AMDs a lot funner to clock than Intel IMO, you can go a lot of ways to the same thing, like you mentioned BD and Phenom II both clock better with lower temperatures than more voltage, you do need to raise the voltage but if a chip is unstable at 5Ghz (for example) it might all be down to being 5c too hot and not the voltage. I've seen quite a few times where Phenom II has become unstable at a certain speed merely because it's summer all of a sudden.

correct sir.

in the winter time my ambient temps are lower as i keep the house at 70f, but in the summer I keep the house at 75f. Just to reduce energy costs, this ambient temp effects the difference between me running 4.9ghz or 5.2ghz. Granted i can still run at 5.2ghz in the summer time, just the fans get to annoying.

But yes with Fx and phenom 2 cpus you want to keep temps under 50c for best results. if your at 55c full load and are unstable with any amount of voltage you throw at it, get the temps below 50c and then that overclock may become stable. You might actually need less voltage.
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post #545 of 636
Looked at slides of recent Piledriver core architecture and those dieshots look absolutely nothing like a Piledriver core, but yeah popular sentiment is that its photoshoped and that the alleged Engineering sample is for all intents and purposes a post released Zambezi debugged sample, my guess is around January-February time, prior to Piledriver engineering, just to see where they can squeeze out some performance.
post #546 of 636
Ok just spent three days reading this ENTIRE thread. I'm really excited for Piledriver FX's. But can somebody answer a quick question? What will be a worthy upgrade over a phenom 965 c3 @ 4.2ghz?
2 module piledriver FX or 3 module? I still don't quite understand the cores vs. modules argument but I don't really care. I'm just interested in the best upgrade for my buck. Will a 5GHz+ 2 or 3 module Piledriver FX beat my phenom?

EDIT: Hey Sarinaide!!!!!!!!!!!!! It's good to see a fellow South African up in here!
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post #547 of 636
3 days is a long time to spend on rumors but I'll add more fuel to the fire: http://semiaccurate.com/2012/09/06/a-brief-look-at-amds-steamroller-core/

They claim that single core could be improved by more than 30%?? drool.gif In that case, my next build will be based on these cores!
Edited by clutchguy - 9/6/12 at 8:04am
post #548 of 636
Yeah that's great and all. But which will bring more bang for buck over PII 965 @ 4.2GHz? Two module or Three module Piledriver FX? Judging by what I am hearing I am leaning towards a three module. I am purely interested in gaming performance for windows 7 I as am not planning on gong to windows 8 at all.
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post #549 of 636
Quote:
Originally Posted by clutchguy View Post

3 days is a long time to spend on rumors but I'll add more fuel to the fire: http://semiaccurate.com/2012/09/06/a-brief-look-at-amds-steamroller-core/
They claim that single core could be improved by more than 30%?? drool.gif In that case, my next build will be based of these cores!

Not shocking. One major change is the modules in steamroller will have 2 decodes instead of 1. The single decode is a major bottleneck in bulldozers design. The concept has already been tested. You can increase the 8150's IPC by roughly 20% by disabling 1 core per module in the bios. That essentially turns it into a 4 core where each core has 1 decode with no sharing. You gimp your multithreaded performance, but it is promising if they can add the decoder per module and still keep the amount of cores.
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post #550 of 636
Quote:
Not shocking. One major change is the modules in steamroller will have 2 decodes instead of 1. The single decode is a major bottleneck in bulldozers design. The concept has already been tested. You can increase the 8150's IPC by roughly 20% by disabling 1 core per module in the bios. That essentially turns it into a 4 core where each core has 1 decode with no sharing. You gimp your multithreaded performance, but it is promising if they can add the decoder per module and still keep the amount of cores.

yes the decoder is a bottleneck. They say the one decoder when all cores are taxed limits cpu throughput to 80%, i remember seeing this on a AMD slide. They just figured this bottleneck would not been seen often. With 2 decode units and a revamped l1 and l2. Steam Roller is where the big improvements will come.

The revamped l2 is a interesting concept, instead of the static l2 per core we are used to , steam roller will introduce dynamic l2, which changes size based on load between the cores. Doubt that will help performance much, but should be a nifty power saving feature.

Overall there is a-lot to be excited about with Steam Roller. Pile-Driver not so much, as it is just tweaks some minor bottlenecks and clock resistance mesh. Its like going from pheonom 2 to thuban. Thubans are better than phenom 2's but the difference isn't all that much to get excited about. Steam Roller actually dives into architectural improvements. Pretty sure their will also be a die shrink to 28nm with steam-roller. Guys over at Amd are announcing a 30-45% improvement over current FX. That is huge, That basically leap frogs intel. Will have to wait for final silicon, and wait we will as its not expected until late 2013.
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