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AMD's Piledriver And K10 CPU Architectures Face Off

Davedree said:
I've always liked the 6350/6300 for the price it's a good cpu.
But i've never understood why the fx4s have always been strong money.
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I agree, for £100 its an awesome CPU, in multi threaded work loads it blows the i3 out of the water while being just as fast in low threaded work with an overclock.

The FX-4/6 and 8 are all the same chip all be it with non functional cores disabled or just disabled depending on demand, just like the P-II x4 960T was actually a P-II x6 with dud cores or 2 cores disabled. I guess they can't go much lower than £100 to turn a meaningful profit on them, my guess is also that the FX-4 is not as mass produced as the FX-6 and 8 as its unlikely that more than 1 module is dud.
 
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Still find it disgusting that FX cores are weaker clock for clock than my old Phenom II.

The fact that I'd have to run a 6350 @ 4.5Ghz to notice even a small improvement (less than 10%?) over my ancient Phenom II @ 3.8Ghz in stuff that isn't well multi threaded is a bit of a poor joke TBH.


Steamroller better deliver that reported 30% IPC improvement, that's all I'm saying...
 
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It doesn't say 30% IPC, it says something else.
We're literally hoping that means IPC.

If it is 30%, then it'll be pretty excellent, but the chances of that are slim.
 
Cooper said:
Still find it disgusting that FX cores are weaker clock for clock than my old Phenom II.

The fact that I'd have to run a 6350 @ 4.5Ghz to notice even a small improvement (less than 10%?) over my ancient Phenom II @ 3.8Ghz in stuff that isn't well multi threaded is a bit of a poor joke TBH.


Steamroller better deliver that reported 30% IPC improvement, that's all I'm saying...
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I completely agree Vishera is not good enough full stop, but its not all that bad, the FX-4 @ stock is anything from 5% slower to 15% faster than the P-II x4 @ 4Ghz.
Now, when you consider that @ 4Ghz the P-II x4 is about as high as you can overclock it while the FX-4 still has 600 to 800Mhz left in the tank it is actually quite a lot better.

And, with the FX-6 only being £100 while 'overall' completely destroying the P-II x4 makes this even better.

The FX-6 is not an i5-K bar a few select things, but consider also @ £170 that not to far from twice the price.

As for PD, no one know what the performance increase will be, but i'm willing to bet its a solid 20% (per core / clock) if at that they are still cheaper than Intel they would be a dammed good CPU full stop.
 
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Martini1991 said:
Mature Phenom II stuff can reach 4.2-4.4 to be honest.

PD has a much more comprehensive instruction list.
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I used to be able to get my 1090T to 4.3Ghz with a 3Ghz CPU-NB,- 8 hour Prime95 Stable. On air.
This is an early 2010 model, I don't know about the later 2012 models but I have never seen anyone match mine :D mine was a Gold pressed Platinum CPU incrusted with Diamonds.

Edit- I was offered quite a lot of money for it on Overclockers.com more than a year ago.
 
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My 1055T did 4.375GHZ at 3.2GHZ CPU NB.
That was a 95W.

And the only reason I couldn't go further was it was sucking too much power and my quad rail couldn't handle it.

And my cooling.
 
Per core performance is important, but getting a modern six core CPU that can often overclock to 5GHz for under £100 is pretty good. If you run software that makes use of all those cores, it's brilliant.
 
Martini1991 said:
My 1055T did 4.375GHZ at 3.2GHZ CPU NB.
That was a 95W.

And the only reason I couldn't go further was it was sucking too much power and my quad rail couldn't handle it.

And my cooling.
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Yeah that's the problem with multi Rail PSU's, if it has 20 Amps on one Rail and a power hungry device hocked upto that Rail your going to have limitation issues.

I was using an XFX 750 Watt PSU (Still have the same one) which has 62 Amps on a single 12v Rail, all I needed to do was bump up the Board Power Line to 130% and away she went....

"And my cooling"

Which was?
 
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Well I was under a full custom loop, but at that type of heat output the cooling was reaching its peak.
I can't imagine a 4.3GHZ Thuban under air, not without throttling.
 
Martini1991 said:
Well I was under a full custom loop, but at that type of heat output the cooling was reaching its peak.
I can't imagine a 4.3GHZ Thuban under air, not without throttling.
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I don't have the overnight Prime results Screen Shot anymore so I can't prove it.
 
You'd need a load graph/core graph as well for the entire time.
I've left stuff priming and it's "passed" but when looking careful noticed it'd throttled.

You've already seen my Thuban results like 20 times :p
 
Martini1991 said:
You'd need a load graph/core graph as well for the entire time.
I've left stuff priming and it's "passed" but when looking careful noticed it'd throttled.

You've already seen my Thuban results like 20 times :p
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I believe you, I have no reason to doubt you.

Anyway, I'm not going to let what was a perfectly pleasant conversation end on a negative note, I do know what i'm doing, I have been at this since the 1990's, I know what happens and know what proof monitoring is needed.

I will agree to disagree, as it were.
 
teppic said:
Per core performance is important, but getting a modern six core CPU that can often overclock to 5GHz for under £100 is pretty good. If you run software that makes use of all those cores, it's brilliant.
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The Fx6 is a brilliantly balanced cpu with regards to frequency scaling vs current draw and heat output. The problem is the fx8 when clocked isn't.
Bulldozer was a turd and piledriver is more efficient in freq scaling, but at the same clock theres not much between them.

I would love to play with a x4 Jaguar to see how it scales.

Humbug + Martini At least you two are keeping it friendly at the moment.......
Anyway you two had it easy, try unlocking to an x4 b55 and overclocking using pure guesswork and extrapolation between cpu temp and core temp because you have no temp readings with acc on. Best £69 I ever spent though.
 
My problem really with the FX-6300 is it's so close in price to the 8320, and still needs a decent board (£80ish) to use well, that most of the time you'd just pay the extra for the 8320. I guess for people on older boards that can just about cope with the 6300 it offers a good upgrade though.
 
Last B55 I clocked I just worked on "If it throttled it's no good, if it doesn't it's good to go"
The cooling wasn't great, just some silly 15 quid cooler, still a daemon clocker though, did 4.4GHZ as a dual core.

Booted 4.5GHZ but I didn't want to throw more voltage at it.
 
yeah lol it would do 4.4 as a dual stable on 1.45,
and 4.2 x4 2750nb. All this was done with cool and quiet on so lovely low idle clock and v-core. Despite all these so called amd experts telling me it would cause stability issues and would limit my overclock. (No it doesn't the phenom/athlon/LLano etc all have P-states i think there are 5 of them can't remember off top my head. With my intel rig I also use the offset way of clocking so its similar too.
 
@ Dave, those were the days, the P-II x4 960T would unlock to an x6 if the 2 disabled cores were good, I remember people all over the place giddy that they had spent £80 on an x4 960T and ended up with an x6 after just a few BIOS tweaks, Brilliant..... the only down side was, just like with the B55 unlock,- temperature monitoring was disabled.

Sadly AMD have become Killjoy's in that, all the FX chips have the inactive Modules lasered off so they can't be reactivated.

Boooo........
 
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