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Considering ASRock Extreme3 990FX, but...

post #1 of 8
Thread Starter 
I'm hearing mixed thoughts on the Extreme3 vs the Extreme4, mainly the power phase. What exactly is the powerphase difference, and why does it matter with overclocking 125W processors? (OC N00b)

Thanks in advance biggrin.gif
post #2 of 8
You can check the AMD motherboard VRM data base in my sig, in general you want at least a 6+X(preferably a 8+X) phase VRM for overclocking a 125W AMD FX chip. Betting VRM(higher phase+higher quality components) will make sure the power delivered the CPU is clean (no fluctuations & reduce VDrop) and make it easier to stabilize an OC at higher voltage. Higher quality VRM also runs cooler which means the motherboard will last longer.

Extreme 4 have 8+2 phase, Extreme 3 have 4+1 phase. I don't know the details as I don't own an AMD board but according to the AMD motherboard VRM info data base compiled by AMD ethuiasts the Extreme4's is better(labeled in green).
Edited by sherlock - 3/24/13 at 9:53pm
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post #3 of 8
Thread Starter 
Quote:
Originally Posted by sherlock View Post

You can check the AMD motherboard VRM data base in my sig, in general you want at least a 6+X(preferably a 8+X) phase VRM for overclocking a 125W AMD FX chip. Betting VRM(higher phase+higher quality components) will make sure the power delivered the CPU is clean (no fluctuations & reduce VDrop) and make it easier to stabilize an OC at higher voltage. Higher quality VRM also runs cooler which means the motherboard will last longer.

Extreme 4 have 8+2 phase, Extreme 3 have 4+1 phase. I don't know the details as I don't own an AMD board but according to the AMD motherboard VRM info data base compiled by AMD ethuiasts the Extreme4's is better(labeled in green).
Wow, thank you! Makes sense now, thank you! But does it only apply to FX chips, or all 125W chips? Common sense tells me all, but I'll be OC'ing a Phenom II X4 955 Black Edition. Thanks!
post #4 of 8
Thread Starter 
Well I guess it's settled, I'm going to spring for the GA-990FXA-UD3. Thanks!
post #5 of 8
ASUS M5A99X EVO R2.0, 990X chipset, digi 6+2 VRM $109.99 after $20 rebate @ ncix
http://us.ncix.com/products/?sku=76030&vpn=M5A99X%20EVO%20R2%2E0&manufacture=ASUS&promoid=1323

Gigabyte 990FXA-UD3 990FX chipset, 8+2 VRM, $124.99 after $10 rebate @ ncix
http://us.ncix.com/products/index.php?sku=62403&manufacture=Gigabyte&promoid=1332


Gigabyte 990FXA-UD3 is a solid board. same VRM setup as the UD-5 (has more SATA ports if you need them.
Gigabyte use a traditional (analog) VRM design while Asus uses digital. Both companies make great AMD boards.

included some links that might have some useful info in them.



AMD motherboard Sale Round-Up
http://www.overclock.net/t/1369005/amd-motherboard-sale-round-up


About VRMs & Mosfets / Motherboard Safety with 125W+ TDP processors by xd_1771
http://www.overclock.net/a/about-vrms-mosfets-motherboard-safety-with-high-tdp-processors

AMD Motherboards - VRM info database
http://www.overclock.net/t/946407/amd-motherboards-vrm-info-database

Phenom II Overclocking Guide
http://www.overclock.net/t/525113/phenom-ii-overclocking-guide

[Official]Gappos little Deneb/Thuban overclocking guide
http://www.overclock.net/t/777378/official-gappos-little-deneb-thuban-overclocking-guide-with-too-many-smileys

Dolk's Guide to the Phenom II
http://www.overclockers.com/forums/showthread.php?t=596023

3 Step Guide to Overclock Your AMD Phenom
http://www.overclockers.com/step-guide-overclock-amd-phenom/

AMD Overclock Guide for newbs
http://www.overclock.net/t/902756/amd-overclock-guide-for-newbs

[OFFICIAL] AMD Phenom II x4 Deneb CPU Owner's Club
http://www.overclock.net/t/1210911/official-amd-phenom-ii-x4-deneb-cpu-owners-club
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post #6 of 8
Thread Starter 
Thank you!! ^^
post #7 of 8
I wish you luck with ASRock, you could be fine with these models. I had a 970 EXTREME3 and 790DE3/U3S3 and they both went dead unexpectedly thumbsdownsmileyanim.gif

They were both cheaper models but unbelievable... The first went dead after three months and I filed and RMA, only to have the same dead board sent back. The second one just died today after two weeks, locking up during POST every time with default settings even after clearing CMOS frown.gif
post #8 of 8
Quote:
Originally Posted by CliffyP View Post

I wish you luck with ASRock, you could be fine with these models. I had a 970 EXTREME3 and 790DE3/U3S3 and they both went dead unexpectedly thumbsdownsmileyanim.gif

They were both cheaper models but unbelievable... The first went dead after three months and I filed and RMA, only to have the same dead board sent back. The second one just died today after two weeks, locking up during POST every time with default settings even after clearing CMOS frown.gif
Horrible experience you had there.
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Ayase Eli
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