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[OFFICIAL] FX-8320/FX-8350 Vishera Owners Club - Page 4373

post #43721 of 67911
Quote:
Originally Posted by hawker-gb View Post

Everything with 4+1 power phase should be banned of using FX8xxx processors.

Example: Asrock 990FX extreme3 will not handle properly FX8xxx at stock despite Asrock advertising it as capable.

I have one and I would not recommend it for the 8 core Vishera's . The biggest problem is the LLC function- which is so heavy handed that I fear for the life of the chip or board. Without LLC ,that particular board doesn't seem to have good enough voltage regulation to maintain stability on the high draw 8 cores.
I recall enabling it while running Wprime on a really good 965 BE @ around 4.5ghz or so, it overshot by .18 volts! Since then I'm very careful about using it on that board.

Sure it fits in the socket and it will run, but there are better options at it's price point.
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post #43722 of 67911
Quote:
Originally Posted by BruceB View Post

Quote:
Originally Posted by Alastair View Post

It's Fatality Killer in blue. That's all it is same crummy 4+1 phase with doublers. Same crummy heatsinks. Translated to simple English. 4.5GHz.
Are you sure it's only 4+1 Phase? The Website says it's 8+2 phase.
Well if it is a design like the Extreme 9, it will simply be 4+1 phase with DOUBLERS to make it an 8+2 phase design. But it isn't a TRUE 8 phase design. (or in the Extreme 9's case 12 or 14 or whatever it is.) This is the reason why even the bog standard and cheaper ASUS M5A'S with their 6 CPU phases can often beat out the AsRock Killer and Extreme 9 for OC even with supposedly fewer phases. Also that statement isn't true. It is not QUANTITY of VRM's that matter but quality. An example of this is the Biostar 990FX motherboard. An extremely robust 4+1 phase board capable of delivering 300 watts. Each phase has three MOSfet's in a 2 high 1 low configuration. The downside however is that on that particular board they are older analogue NIKOS VRM's. (Which don't have a great reputation) But reviewer's had the board with an 8150 at 4.7GHz with 1.56V so I guess that is pretty impressive!

On that note can someone with the knowledge explain to me WHY digital VRM's are better than analogue VRM's? I know digital is better. But WHY! Thanks guys! tongue.gif
Edited by Alastair - 12/14/14 at 8:47am
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post #43723 of 67911
I was able to reach 4.8 stable on my Fatality Killer. and I can bench on 5ghz but not P95 or IBT
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post #43724 of 67911
Quote:
Originally Posted by Alastair View Post

Well if it is a design like the Extreme 9, it will simply be 4+1 phase with DOUBLERS to make it an 8+2 phase design. But it isn't a TRUE 8 phase design. (or in the Extreme 9's case 12 or 14 or whatever it is.) This is the reason why even the bog standard and cheaper ASUS M5A'S with their 6 CPU phases can often beat out the AsRock Killer and Extreme 9 for OC even with supposedly fewer phases. Also that statement isn't true. It is not QUANTITY of VRM's that matter but quality. An example of this is the Biostar 990FX motherboard. An extremely robust 4+1 phase board capable of delivering 300 watts. Each phase has three MOSfet's in a 2 high 1 low configuration. The downside however is that on that particular board they are older analogue NIKOS VRM's. (Which don't have a great reputation) But reviewer's had the board with an 8150 at 4.7GHz with 1.56V so I guess that is pretty impressive!

On that note can someone with the knowledge explain to me WHY digital VRM's are better than analogue VRM's? I know digital is better. But WHY! Thanks guys! tongue.gif
Thanks for the response, that's very interesting. So my AsRock 990FX Fatal1ty Pro (which is advertised as 12+2) is really 6+1?
While we're on the subject, is there any objective measure of the quality of a board's VRMs or is it just trial-and-error?

I must say, I like my 990FX Fatal1ty Pro very much and don't quite undersand all the hate some people have for it. That said, I've only been 'clocking a Phenom II on it so far, maybe it'll all change when I get an FX 8350 after xmas! wink.gif
 
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post #43725 of 67911
Quote:
Originally Posted by BruceB View Post

Thanks for the response, that's very interesting. So my AsRock 990FX Fatal1ty Pro (which is advertised as 12+2) is really 6+1?
While we're on the subject, is there any objective measure of the quality of a board's VRMs or is it just trial-and-error?

I must say, I like my 990FX Fatal1ty Pro very much and don't quite undersand all the hate some people have for it. That said, I've only been 'clocking a Phenom II on it so far, maybe it'll all change when I get an FX 8350 after xmas! wink.gif
the fatality pro and the fatality killer are two very decent boards.... think of the killer as a Ford focus and the Pro as a gt40 lol ok probably not that big a difference but it's a much more solid board than the killer...
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post #43726 of 67911
Quote:
Originally Posted by BruceB View Post

Quote:
Originally Posted by Alastair View Post

Well if it is a design like the Extreme 9, it will simply be 4+1 phase with DOUBLERS to make it an 8+2 phase design. But it isn't a TRUE 8 phase design. (or in the Extreme 9's case 12 or 14 or whatever it is.) This is the reason why even the bog standard and cheaper ASUS M5A'S with their 6 CPU phases can often beat out the AsRock Killer and Extreme 9 for OC even with supposedly fewer phases. Also that statement isn't true. It is not QUANTITY of VRM's that matter but quality. An example of this is the Biostar 990FX motherboard. An extremely robust 4+1 phase board capable of delivering 300 watts. Each phase has three MOSfet's in a 2 high 1 low configuration. The downside however is that on that particular board they are older analogue NIKOS VRM's. (Which don't have a great reputation) But reviewer's had the board with an 8150 at 4.7GHz with 1.56V so I guess that is pretty impressive!

On that note can someone with the knowledge explain to me WHY digital VRM's are better than analogue VRM's? I know digital is better. But WHY! Thanks guys! tongue.gif
Thanks for the response, that's very interesting. So my AsRock 990FX Fatal1ty Pro (which is advertised as 12+2) is really 6+1?
While we're on the subject, is there any objective measure of the quality of a board's VRMs or is it just trial-and-error?

I must say, I like my 990FX Fatal1ty Pro very much and don't quite undersand all the hate some people have for it. That said, I've only been 'clocking a Phenom II on it so far, maybe it'll all change when I get an FX 8350 after xmas! wink.gif
I can't remember where I read about the ASRock's VRM designs. It was here on OCN, but if I could find the article for you I would post it. As to find out what motherboards have good designs. Ey! That's why places like OCN exist. You can ask and people will give you feedback on the boards they own. Or check out the reviews. Often review sites show pictures of VRM sections of motherboards (with heatsinks removed to show what lies hidden underneath.) and they will tell you if they are good, bad, ugly or average. As for the Falalty Pro. They are decent boards and share the same VRM's as the Extreme 9. They are good up to about 4.8GHz. About the same as other TRUE 6 phase designs as the ASUS M5A's.
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post #43727 of 67911
Quote:
Originally Posted by BruceB View Post

Thanks for the response, that's very interesting. So my AsRock 990FX Fatal1ty Pro (which is advertised as 12+2) is really 6+1?
While we're on the subject, is there any objective measure of the quality of a board's VRMs or is it just trial-and-error?

I must say, I like my 990FX Fatal1ty Pro very much and don't quite undersand all the hate some people have for it. That said, I've only been 'clocking a Phenom II on it so far, maybe it'll all change when I get an FX 8350 after xmas! wink.gif

trial and error.

atleast in my experience.


older asus m4a78T-E board on my PhII x4 965be, which had an older non-digi vrm setup (8+1) with a solid heatsink on the mosfets. I could barely stabilize the overclock at 3.7ghz. the ram had to be downclocked from it's advertised 1600 to 1333 to get it to boot (not a big deal, technically the phII wasn't supposed to be able to work with 1600 ram)

i swapped up to a asus m5a99x evo, hit 4.1ghz on the overclock. got the ram up to 1600, cas 8 with 1.65v... and that was a Digital 6+2 design board.

pretty clear in my opinion what the better vrm design was.
 
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post #43728 of 67911
Hey Guys,

Be careful with the asrock extreme 9 for these chips. They do blow vrm's with 8350's and up with 4.8ghz+. It might be fixed now. Carefully research it though. When mine blew it took the cpu and ram with. Check this out below.

http://www.overclock.net/t/1318995/official-fx-8320-fx-8350-vishera-owners-club/33060

Chris
post #43729 of 67911
hello,
I have read about vrm's, you can have different capacitors sizes, the vrm count can vary quite a bit when the size of your capacitor can change by about double or half.
either way its price be the obvious reason to buy, more money makes better things in general.
the designers when to 6-8 vrms with new hardware and that's the way forward.
as for the +1 part, its the power to the memory controller, it should be two.
wonder if quad channel will need four memory controllers?
Edited by MrPerforations - 12/14/14 at 10:39am
    
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post #43730 of 67911
Quote:
Originally Posted by hawker-gb View Post

Everything with 4+1 power phase should be banned of using FX8xxx processors.

Example: Asrock 990FX extreme3 will not handle properly FX8xxx at stock despite Asrock advertising it as capable.

Actually Asrock has put asterisk on that board, that you need to use top-down air cooler (to cool the VRM).

http://www.asrock.com/mb/AMD/990FX%20Extreme3/?cat=CPU

I have Asrock 970 extreme3 and i 'say up to 4Ghz it's OK, even better if undervolted. Beyond that, the socket overheats a tad too much.

Quote:
Originally Posted by cssornkinman 
I have one and I would not recommend it for the 8 core Vishera's . The biggest problem is the LLC function- which is so heavy handed that I fear for the life of the chip or board. Without LLC ,that particular board doesn't seem to have good enough voltage regulation to maintain stability on the high draw 8 cores.

In the Asrock 970 extreme3, there is the same issue and in the BIOS there is an explicit writing when you select the LLC, saying "For AM3 enable, for AM3 disable". And sure enough, disable is the solution.
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FX-8320@4Ghz Gigabyte 970 UD3P rev2.1 Gainward GTX 750Ti Corsair XMS3 1600Mhz 16GB (4x4GB) 
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Crucial BX100 250GB Western Digital Green 2TB LiteOn Blu-Ray Burner IHBS 112-2 LG BH16NS55 Blu-Ray Burner 
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Scythe Katana 3 Windows 7 Pro 64bit ASUS 22" VS228HR Microsoft Wired Keyboard 600 
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EVGA 430W Sharkoon VG4-V Logitech M90 Onboard 
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FX-8300 Asrock 970 Extreme3 HIS 6570 Silence Corsair XMS3 1600Mhz 8GB (2x4GB) CAS9 
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Plextor M6S 128GB Toshiba 2TB SATAIII LiteOn Blu Ray burner IHBS 112-2 Xigmatek Balder 
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Main
(16 items)
 
Dedicated Encoder
(15 items)
 
 
CPUMotherboardGraphicsRAM
FX-8320@4Ghz Gigabyte 970 UD3P rev2.1 Gainward GTX 750Ti Corsair XMS3 1600Mhz 16GB (4x4GB) 
Hard DriveHard DriveOptical DriveOptical Drive
Crucial BX100 250GB Western Digital Green 2TB LiteOn Blu-Ray Burner IHBS 112-2 LG BH16NS55 Blu-Ray Burner 
CoolingOSMonitorKeyboard
Scythe Katana 3 Windows 7 Pro 64bit ASUS 22" VS228HR Microsoft Wired Keyboard 600 
PowerCaseMouseAudio
EVGA 430W Sharkoon VG4-V Logitech M90 Onboard 
CPUMotherboardGraphicsRAM
FX-8300 Asrock 970 Extreme3 HIS 6570 Silence Corsair XMS3 1600Mhz 8GB (2x4GB) CAS9 
Hard DriveHard DriveOptical DriveCooling
Plextor M6S 128GB Toshiba 2TB SATAIII LiteOn Blu Ray burner IHBS 112-2 Xigmatek Balder 
OSMonitorKeyboardPower
Windows 7 Pro 64bit Samsung S22B350H Microsoft Wired 600 Corsair VS350 
CaseMouseAudio
Lepa LPC 306 Logitech M90 Onboard 
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Overclock.net › Forums › AMD › AMD CPUs › [OFFICIAL] FX-8320/FX-8350 Vishera Owners Club