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AMD FX (Bulldozer) Owners Club! - Page 711

post #7101 of 8112
Quote:
Originally Posted by ebduncan View Post

late 2013/ early 2014 is rumored.
my 8120 runs at 4.945ghz. for starters and doesn't go above 42c full load. with 1.45 vcore. I understand piledriver runs cooler than Bulldozer. Heat is not a issue in my case as I'm under a custom water loop. To swap out the 8120 with a 8320 would be a small upgrade, and only if i could reach the same clock speed as my 8120. Most of your gains came from clock speed increases not because piledriver is that much better than bulldozer. Remember it only has an average 7% increase in IPC. A buddy of mine has the 8350 and I put it in my computer for a day cause he wanted to see how high it would go under my cooling. I was able to get 5.1ghz and compared it to my 8120 at 4.945ghz and the difference to me isn't worth it.

Well that is good you have a decent oc 8120 but in my case my 8120 walled out@4.7 so the 7%ipc you quote plus the extra 300mhz for me is a huge difference where it counts for my use, gaming/gpu utilisation, Simple fact is the fx8120@4.7 bottlnecked my 2 x gpu badly in bf3 multi, the fx8320 does not

Edit was late last night, my fx8120 was round 45c under my water at 1.48 and 4.7 and i have a xspc rx360 rad with a high flow d5 vario pump with ek acetal top. It would bench above 4.7, even benched at 5ghz and had it validated but it was not gaming stable, bf3 would crash it in minutes regardless of the voltages.

Edit - If your fx8120 does 4.9ghz at only 42c@1.45 vcore stress test stable what made you stop at 4.9 with so much oc headroom?
Edited by Ghost12 - 3/2/13 at 3:43am
post #7102 of 8112
Quote:
Originally Posted by Ghost12 View Post

Well that is good you have a decent oc 8120 but in my case my 8120 walled out@4.7 so the 7%ipc you quote plus the extra 300mhz for me is a huge difference where it counts for my use, gaming/gpu utilisation, Simple fact is the fx8120@4.7 bottlnecked my 2 x gpu badly in bf3 multi, the fx8320 does not

Edit was late last night, my fx8120 was round 45c under my water at 1.48 and 4.7 and i have a xspc rx360 rad with a high flow d5 vario pump with ek acetal top. It would bench above 4.7, even benched at 5ghz and had it validated but it was not gaming stable, bf3 would crash it in minutes regardless of the voltages.

Edit - If your fx8120 does 4.9ghz at only 42c@1.45 vcore stress test stable what made you stop at 4.9 with so much oc headroom?

Voltage wall. I can run 5.05ghz, and 5.16ghz but its not stable under extended gaming. Btw i had 7870 crossfire, never ran into any bottlenecks. I am on a single 7950 soon to be crossfired.

Biggest thing is to shoot for a high hyper transport speed ie 2700mhz+ and that pretty much solves that.
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post #7103 of 8112
Quote:
Originally Posted by ebduncan View Post

Voltage wall. I can run 5.05ghz, and 5.16ghz but its not stable under extended gaming. Btw i had 7870 crossfire, never ran into any bottlenecks. I am on a single 7950 soon to be crossfired.

Biggest thing is to shoot for a high hyper transport speed ie 2700mhz+ and that pretty much solves that.


Depends on the game. Any single player and most multi runs fine. Bf3 multi is cpu intense, fx8120 huge bottlenecks@4.7 7870 crossfire. Yes the voltage wall is still as prevalent in this piledriver where it takes huge jumps at that level. For example i got 4.8@1.48 yesterday and could have dropped the vcore back but then the change in clock to 5ghz took a massive jump to 1.52 just to post into windows. 1.54 to run 20 passes of Ibt on standard settings then jump again to 1.58 to run Ibt at high settings and be game stable. The difference i have found is the temp scaling, whereas scaling vcore up on the fx8120 also brought massive temps even under water this fx8320 does not. Makes all the difference. playing bf3 multi last night was a minimum 20-25% better gpu use over the fx8120@4.7, maybe the gap would have closed slightly on a higher 8120 clock but as the thermal wall limited the voltage wall the change to the fx8320 is most definitely a big upgrade for my set up and personally.
Edited by Ghost12 - 3/2/13 at 9:14am
post #7104 of 8112
Quote:
Originally Posted by ebduncan View Post

Voltage wall. I can run 5.05ghz, and 5.16ghz but its not stable under extended gaming. Btw i had 7870 crossfire, never ran into any bottlenecks. I am on a single 7950 soon to be crossfired.

Biggest thing is to shoot for a high hyper transport speed ie 2700mhz+ and that pretty much solves that.

With a nice setup like yours, I would sell the 8120 and apply $50 and get a 8320/50. With Crossfire, it will make a lot of difference.

You are spending $600 on gpu's, why not the extra for the CPU?
Edited by Electroneng - 3/2/13 at 11:49am
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post #7105 of 8112
Quote:
Originally Posted by Electroneng View Post

With a nice setup like yours, I would sell the 8120 and apply $50 and get a 8320/50. With Crossfire, it will make a lot of difference.

You are spending $600 on gpu's, why not the extra for the CPU?

He doesn`t think there is value in the upgrade if you read back a few posts of our conversation. I personally am blown away by the crossfire scaling of my 8320@5ghz over my 8120@4.7. Different league altogether. Suppose if his 8120@4.9 performs in his personal use there would be no value in it. I paid £104 new and shipped for my 8320, i will sell the 8120 for roughly £70 meaning a £30 upgrade and it is without doubt to my mind an upgrade where gpu useage is concerned
Edited by Ghost12 - 3/2/13 at 11:57am
post #7106 of 8112
Quote:
name="Ghost12" url="/t/1139726/amd-fx-bulldozer-piledriver-owners-club/7100#post_19421482"]
He doesn`t think there is value in the upgrade if you read back a few posts of our conversation. I personally am blown away by the crossfire scaling of my 8320@5ghz over my 8120@4.7. Different league altogether. Suppose if his 8120@4.9 performs in his personal use there would be no value in it. I paid £104 new and shipped for my 8320, i will sell the 8120 for roughly £70 meaning a £30 upgrade and it is without doubt to my mind an upgrade where gpu useage is concerned

Is the 8350 really that much better over the others? I have seen many people make comments and some 3dmark scores of 8120s oced (and other Similar BD/PD cpus) way faster then an 8350 stock and the 8350 still out performs. I expected these cpus to perform similarly when clocked at the same speeds...
Edited by EyeCU247 - 3/2/13 at 12:46pm
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post #7107 of 8112
Quote:
Originally Posted by EyeCU247 View Post

Is the 8350 really that much better over the others? I have seen many people make comments and some 3dmark scores of 8120s oced (and other Similar BD/PD cpus) way faster then an 8350 stock and the 8350 still out performs. I expected these cpus to perform similarly when clocked at the same speeds...

Its all subjective to the cpu itself, i can only go by my personal experience with the 8120/8320. My fx8120 walled out at 4.7, my fx8320 walls out at 5ghz. So from that if i take them both at stock my 8320 will beat my 8120 and also if we take max overclocks my 8320 will beat out my 8120 by a mile in gaming on 2xgpu. What the other poster has been saying is that his fx8120 walls out at 4.9, now if he goes out and buys an 8320/8350 tomorrow there is no guarantee that a piledriver will clock that high therefore making the upgrade a value he is not willing to gamble on.

Does anyone know at what speed, taking into account the two differant cpu`s match, so for example if an 8120 is at 4.9 what speed roughly does the clock need to be(piledriver) taking into account the refinements and improved ipc to beat it at that clock, how much lower than 4.9?

For me it was a no brainer purchase, the 8120 could not push my 2xgpu in the game i play mainly therefore rendering the value£ i have in the gpu`s far less due to use, for a £30 upgrade i am finally getting my moneys worth out of my two hd7870
Edited by Ghost12 - 3/2/13 at 1:04pm
post #7108 of 8112
A 5GHz 8150 will match a 4.75GHz 8350, And the 8350 will blow the 8150 out of this planet in a gaming situation
     
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post #7109 of 8112
Quote:
Originally Posted by Pedroc1999 View Post

A 5GHz 8150 will match a 4.75GHz 8350, And the 8350 will blow the 8150 out of this planet in a gaming situation
The 8350 wont blow the 8150 out of this planet, but it is slightly better. I haven't had any problems with this cpu and I don't understand why people are talking about cpu bottleneck which only happens in very few games like starcraft 2 and arma2 (both are old and not made for moar cores). I, personally, am going to wait until steam(t)roller and then buy one of those and some watercooling kit smile.gif
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post #7110 of 8112
Quote:
Originally Posted by AlDyer View Post

The 8350 wont blow the 8150 out of this planet, but it is slightly better. I haven't had any problems with this cpu and I don't understand why people are talking about cpu bottleneck which only happens in very few games like starcraft 2 and arma2 (both are old and not made for moar cores). I, personally, am going to wait until steam(t)roller and then buy one of those and some watercooling kit smile.gif

Battlefield 3 multiplayer is not old or single threaded, dirt showdown is not old or single threaded as not are quite a few newer games. People talking about the bottleneck because there is a bottleneck. You maybe wont see it on one 7870 but i can assure you if you put another 7870 in there you will be talking bottleneck if you play those games
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