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post #6291 of 8112
Quote:
Originally Posted by Durvelle27 View Post

how much bottleneck will i see Crossfiring my HD 6950 2GB with my AMD FX 4100 at 4.8GHz until piledriver is released ?

Well my Phenom II 840, which is only a little slower, bottlenecked my single 6950 really, really badly, like from 20-30% performance loss. However once I OC'ed to 3.6ghz the bottleneck vanished, so I'd sat if you were at 4.8ghz you'd be fine.
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post #6292 of 8112
Stable: http://valid.canardpc.com/show_oc.php?id=2527934

Actually, Prime stable 4Ghz @1.29v. Max Prime stable 4.4Ghz @1.42.

Strange thing about this chip is that it douse not like to work at some specific freq. For example, 3.6Ghz, next stable freq. 4.0Ghz, next s.f. 4.4Ghz, didn't tested so far for 4.8Ghz, due to the stock cooler, and it takes too much time to find stable voltage for specific freq.

You need to keep CPU as close as possible to VID, at least with this chip here.
post #6293 of 8112
Quote:
Originally Posted by tweakpower View Post

Stable: http://valid.canardpc.com/show_oc.php?id=2527934
Actually, Prime stable 4Ghz @1.29v. Max Prime stable 4.4Ghz @1.42.
Strange thing about this chip is that it douse not like to work at some specific freq. For example, 3.6Ghz, next stable freq. 4.0Ghz, next s.f. 4.4Ghz, didn't tested so far for 4.8Ghz, due to the stock cooler, and it takes too much time to find stable voltage for specific freq.
You need to keep CPU as close as possible to VID, at least with this chip here.
Nice i wish i could get to that My 4100 Dosent Even let me get there i can get to 3.9 But anything over that my Computer will start up with a black screen frown.gif
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post #6294 of 8112
Quote:
Originally Posted by snipekill2445 View Post

Well my Phenom II 840, which is only a little slower, bottlenecked my single 6950 really, really badly, like from 20-30% performance loss. However once I OC'ed to 3.6ghz the bottleneck vanished, so I'd sat if you were at 4.8ghz you'd be fine.

FX 4100 is a lot better chip then Athlon II X4 u have ( Phenom II X4 840 ), especially clocked to 4.8Ghz. U will be fine until u get Piledriver.
post #6295 of 8112
for some odd reason i can't get my chip to oc past 4.6GHz
 
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post #6296 of 8112
Quote:
Originally Posted by Adrenaline View Post

Nice i wish i could get to that My 4100 Dosent Even let me get there i can get to 3.9 But anything over that my Computer will start up with a black screen frown.gif

Strange, you should be fine at stock voltage at 4Ghz at least. Maybe something else keeps your chip. For me 3.9Ghz is unstable (tho, it is Prime stable), but 4Ghz works as charm. IF i could get 4.4Ghz at stock voltage Prime stable it would be nice, since chips works very well at that freq.

Try to keep it at 400Mhz OC wehen you go, 36Ghz, next 4Ghz, next 4.4, 4.8 and so on, THis chip really likes those freq, at least here on my board and components.
post #6297 of 8112
Quote:
Originally Posted by tweakpower View Post

Strange, you should be fine at stock voltage at 4Ghz at least. Maybe something else keeps your chip. For me 3.9Ghz is unstable (tho, it is Prime stable), but 4Ghz works as charm. IF i could get 4.4Ghz at stock voltage Prime stable it would be nice, since chips works very well at that freq.
Try to keep it at 400Mhz OC wehen you go, 36Ghz, next 4Ghz, next 4.4, 4.8 and so on, THis chip really likes those freq, at least here on my board and components.
I know its completely stable for 30 Minutes on 3.9Ghz But when i save and exit bios on 4Ghz BAM black screen even though my pc is on annoys me because i have to take my gpu out then take the battery out.
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[AMD] FX 4100  [Gigabyte] GA-880GM-USB3 (Rev 3.1) [MSI] Radeon HD 6770  [Crucial] Ballistix tactical tracers (2x2GB) 16... 
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[Seagate] ST1000DM003 1TB (Storage) [SanDisk] 64GB SSD (Boot) [Coolermaster] Hyper TX3 Evo [Windows] 7 Professional x64 
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[AMD] FX 4100  [Gigabyte] GA-880GM-USB3 (Rev 3.1) [MSI] Radeon HD 6770  [Crucial] Ballistix tactical tracers (2x2GB) 16... 
Hard DriveHard DriveCoolingOS
[Seagate] ST1000DM003 1TB (Storage) [SanDisk] 64GB SSD (Boot) [Coolermaster] Hyper TX3 Evo [Windows] 7 Professional x64 
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[LG] Flatron W2246 22" [Novatech] PowerStation 500W PSU [Fractal Design] Core 1000  [Gigabyte] M6800 Gamings Mouse 
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[Ozone] Groundlevel S Gaming Mousemat [Gigabyte] Onboard Audio 
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[Intel] Core I5 3230M 3.2Ghz [AMD] HD 7670M  [Samsung] 6GB 1600Mhz [Seagate] Sata 3 500GB HDD 
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post #6298 of 8112
can someone help me trying to get 4.8GHz on my FX 4100 can't seem to figure out it. my board is a ASUS M5A97 EVO
 
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post #6299 of 8112
post #6300 of 8112
Quote:
Originally Posted by Adrenaline View Post

I know its completely stable for 30 Minutes on 3.9Ghz But when i save and exit bios on 4Ghz BAM black screen even though my pc is on annoys me because i have to take my gpu out then take the battery out.

Its probably RAM, lower its frequency and then try to OC
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