News MSI's motherboards now support 125W AMD CPUs

[CardJoe]

http://www.bit-tech.net/news/2008/04...25w_amd_cpus/1

After previous calls from bit-tech for MSI to change its support for 125W Athlons and 125W Phenoms - MSI's lineup has changed.

[BUFF]

claimed 125W support was withdrawn from the original K9A2 CF because of several dramatic failures in user systems.
http://global.msi.com.tw/index.php?v...&cat3_no=#menu

There is however a new K9A2 CF-F V2 with an improved PWM section & that claims 125W support.
http://global.msi.com.tw/index.php?v...&cat3_no=#menu

[Bindibadgi]

Ahhh it's on the US site but not the global one - I didn't notice it.

Thanks for the update!

[Gravemind123]

When I went to MSI's US site, they have the Phenom 9850 listed as supported on the K9A2 CF-F with the PCB version listed as 1.0, was the old board's PCB not 1.0?

Link: http://global.msi.com.tw/index.php?f...&cat3_no=#menu

[jim48509]

Looking at the original K9A2 CF and the V2 the only visible difference appears to be a heat sink on the PWM's.
That would lead one to think that the PWM rating is ok just the cooling is rubbish, could fittimg a heat sink to the PWM's on the original CF enable those of us with the board and a 125W cpu to run it at what is was supposed to be? ( Currently my X2 6400 is clocked at 2.8 Ghz )

On the global web site they have put the V2 with the original board but the V2 cpu support for 125W X2 6000, 6400 is listed as " under test "

[[USRF]Obiwan]

Yeah wonderful!

And now AMD is releasing the 140W 9950 Quadcore Phenoms, try to beat that MSI!

[Gravemind123]

Originally Posted by [USRF]Obiwan

Yeah wonderful!

And now AMD is releasing the 140W 9950 Quadcore Phenoms, try to beat that MSI!

145W? I believe that is epic fail...I seriously hope they measure TDP differently from Intel or AMD's quadcores are in more trouble then they may have already been, since all of Intel's non-extremes have a 95W TDP and even the 9770 only has a rated 136W TDP, but that is at 3.2GHz as opposed to the 2.5GHz of the Phenom.

[lemel]

TBH i feel for the MOBO makers, good on MSI to really listen and upgrade their boards, but why AMD keep on up-ing the TDP is really the unforgivable part....

[sneaker98]

Originally Posted by jim48509

Looking at the original K9A2 CF and the V2 the only visible difference appears to be a heat sink on the PWM's.
That would lead one to think that the PWM rating is ok just the cooling is rubbish, could fittimg a heat sink to the PWM's on the original CF enable those of us with the board and a 125W cpu to run it at what is was supposed to be? ( Currently my X2 6400 is clocked at 2.8 Ghz )

That's what I'm attempting to find out. I'm talking with MSI tech support at the moment, since I noticed what you did - the only visible difference is an extra heatsink.

Which makes sense. The other 790X board, Gigabyte's GA-MA790X-DS4, also appears to suffer from the same problem as v1. More than one review on newegg states that it smoked, caught fire, etc.

And if you'll note, both K9A2 CF-F v1 and the GA-MA790X-DS4 lack any sort of cooling over the chips beside the CPU slot. v2 of the K9A2 appears to fix that problem, whereas it looks like Gigabyte is just ignoring the issue.

My problem is that, in Canada, the v2 is unavailable. So I'm trying to find out if I can buy v1, and slap an aftermarket heatsink (like a bunch of the ones Zalman uses for GDDR RAM on video cards) and essentially have a homemade v2. But if a BIOS update has completely removed compatibility with 125w processors in the v1, then... well, I'm screwed until v2 becomes available in Canada.

I'll let you folks know what I find out. In the meantime, does anyone have the K9A2 CF-F and a 125w processor? Did you update to the latest bios, and it still works? Any heating issues? etc?

[jim48509]

Originally Posted by sneaker98

That's what I'm attempting to find out. I'm talking with MSI tech support at the moment, since I noticed what you did - the only visible difference is an extra heatsink.

Which makes sense. The other 790X board, Gigabyte's GA-MA790X-DS4, also appears to suffer from the same problem as v1. More than one review on newegg states that it smoked, caught fire, etc.

And if you'll note, both K9A2 CF-F v1 and the GA-MA790X-DS4 lack any sort of cooling over the chips beside the CPU slot. v2 of the K9A2 appears to fix that problem, whereas it looks like Gigabyte is just ignoring the issue.

My problem is that, in Canada, the v2 is unavailable. So I'm trying to find out if I can buy v1, and slap an aftermarket heatsink (like a bunch of the ones Zalman uses for GDDR RAM on video cards) and essentially have a homemade v2. But if a BIOS update has completely removed compatibility with 125w processors in the v1, then... well, I'm screwed until v2 becomes available in Canada.

I'll let you folks know what I find out. In the meantime, does anyone have the K9A2 CF-F and a 125w processor? Did you update to the latest bios, and it still works? Any heating issues? etc?

OMFG I thought about swapping the K9A2 CF for the gigabyte DS4 board now I won't, thanks for the link.
I don't think putting after market heat sinks on the PWM's would work well as plastic is a poor conductor of heat
and the plastic case on the pwm's is all you can put them on unless you desolder them, stand them up so the metal of the PWM is in contact with the heat sink.

I have a ThermalTake BigTyp 120 heat sink on the cpu which does blow air over the PWM's which is working fine with the X2 64 6400 clocked @ 2.8 Ghz and has been since early Feb. I lack the intestinal fortutide to clock it @ 3.2 Ghz. As the system does what I want in this configuration ( play UT3 ) I will go with plan B which is wait until AMD come out with a 95 watt or less, faster Phenom. The Bios is the same for the V1, V2 boards so unless it knows the difference between a V1, V2 board then it still should support 125 watt cpu's for the V1 board, if you find out that it doesn't support 125 watt cpu's on the V1 board I would like to know as I will leave my bios at Ver 1.3.

Another option you may consider is the DFI LANPARTY DK 790FX-M2RS which does have a heat sink on the PWM's, unfortunately it is a bit more expensive and a review I read somewhere said they considered the cpu power section a bit light for 125 watt cpu's.

[sneaker98]

I just thought I'd let you folks know the response I got from MSI. I asked two specific questions:


1) If I put an AMD Athlon64 x2 6400+ 125w processor into the K9A2 CF-F v1, will it run?

Answer: Athlon 6400+ still can run at V1 MB without any problem but we won’t officially support it. Because PWM design spec is not fully support 125W CPU and it might reduce MB life-time if MB running 100% loading. The circuit of PWM might not handle more than 3 years. That is why we say that we can’t support it.


2) If I get aftermarket heatsinks and place them over the chips that have heatsinks in v2, will this minimize overheating issues? Or were there more fixes in v2 than just a heatsink?

Answer: Additional thermal solution might extend lifetime but not real answer. So it can reduce overheating problem but still can’t say that it can support 125W CPU fully.

I don't think putting after market heat sinks on the PWM's would work well as plastic is a poor conductor of heat
and the plastic case on the pwm's is all you can put them on unless you desolder them, stand them up so the metal of the PWM is in contact with the heat sink.

I get that it wouldn't work as well as, say, CPU heatsinks - but since this seems to be the solution MSI did (in fact, I'm fairly certain that if you peel back the K9A2 v2 sticker on the board, you'll see K9A2 v1), I think it'll work.

The motherboard is only about $100 bucks, so it's not like I'm taking a huge risk here. But it has all the features I wanted, so I'm going to give 'er a shot.

I'll keep you folks posted about the results. I'll be upgrading at the end of the month.

[sneaker98]

I told you folks that I'd keep you posted, and so I am.

Upon finally getting the money together to get my upgrade, the K9A2 v2 was still unavailable in Canada - so I did what I said I'd do. I bought a bunch of VRAM heatsinks, and placed them on top of the voltage regulators.



You can clearly see them to the left of the CPU slot - the purplish-blue things.

The 8 that came in the pack were the exact length I needed. I only had to take a pair of tin-snips and trim the "fins" that stuck out on the sides of the heatsink so that it could fit between those capacitors.



So far, so good. Haven't had a problem, though I've only been running the new rig about a week now. The heatsinks feel slightly warm to the touch, but not alarmingly. And no, I don't plan on overclocking my 6400+ 125W

[jnahc]

Hi sneaker89,

I just wanted to say thanks for posting those pictures. I bought a 6000+ and I heard how the k9a2 cf rev1 had problems with 125w processors but I mistakenly ordered a rev1 anyways. I was searching around for awhile to see exactly which part of the motherboard had heat problems and finally, I found your post.

I'll be putting my computer together soon. The only thing I have left to get are the ZM-RHS1's (that you are using?).

Hopefully everything will be ok, I'll post and update if I remember.

[jnahc]

Hello everyone,

It's been about a week since I put my computer together. I slapped on the heatsinks on the PWM's and have been running the 6000+ (125w) on my MSI K9A2 Rev. 1 without any problems for awhile.

As noted before, the heatsinks do feel a bit warm on touching.

So far it's been working like I expected.

[HELLSPAWNPR]

Originally Posted by sneaker98

I told you folks that I'd keep you posted, and so I am.

Upon finally getting the money together to get my upgrade, the K9A2 v2 was still unavailable in Canada - so I did what I said I'd do. I bought a bunch of VRAM heatsinks, and placed them on top of the voltage regulators.



You can clearly see them to the left of the CPU slot - the purplish-blue things.

The 8 that came in the pack were the exact length I needed. I only had to take a pair of tin-snips and trim the "fins" that stuck out on the sides of the heatsink so that it could fit between those capacitors.



So far, so good. Haven't had a problem, though I've only been running the new rig about a week now. The heatsinks feel slightly warm to the touch, but not alarmingly. And no, I don't plan on overclocking my 6400+ 125W

Cool I was thinking the same thing when i saw the new rev on this motherboard. At the moment im using a 5000+ X2 OC 3.3GHZ its around 110w at this setting. Also would like to know are you using the latest Bios, im using the one in the CD, that came with the board.

[sneaker98]

Hey folks, sorry I wasn't watching for responses.

My motherboard is still running with the self-made heatsinks, and I have yet to have a problem.

In answer to the questions, I used the following for my heatsinks: http://www.zalman.com/ENG/product/Pr...ad.asp?idx=136

Again, I had to snip off the fans that stick out. I used a pair of tin snips to do that, but just about any sort of cutting tool will do it. Hedge trimmers would probably even work.

Also would like to know are you using the latest Bios, im using the one in the CD, that came with the board

I'm using the latest BIOS. There is no lock on what CPU the v1 accepts, if that's what you're asking. I doubt there will ever be one with a lock, since, if I'm correct, v1 and v2 are identical save for the heatsink over the PWM.

[HELLSPAWNPR]

Originally Posted by sneaker98

Hey folks, sorry I wasn't watching for responses.

My motherboard is still running with the self-made heatsinks, and I have yet to have a problem.

In answer to the questions, I used the following for my heatsinks: http://www.zalman.com/ENG/product/Pr...ad.asp?idx=136

Again, I had to snip off the fans that stick out. I used a pair of tin snips to do that, but just about any sort of cutting tool will do it. Hedge trimmers would probably even work.

I'm using the latest BIOS. There is no lock on what CPU the v1 accepts, if that's what you're asking. I doubt there will ever be one with a lock, since, if I'm correct, v1 and v2 are identical save for the heatsink over the PWM.

Hi, sneaker98. After seeing your pic with the mosfet coolers. I bought some yesterday and put them on. thanks for the idea, also wanted to ask what cpu are you using? heres a link to my board with the heatsinks placed http://i180.photobucket.com/albums/x...6/DSC01822.jpg

[sneaker98]

Originally Posted by HELLSPAWNPR

Hi, sneaker98. After seeing your pic with the mosfet coolers. I bought some yesterday and put them on. thanks for the idea, also wanted to ask what cpu are you using? heres a link to my board with the heatsinks placed http://i180.photobucket.com/albums/x...6/DSC01822.jpg

Nice!

I'm currently using an older 125W CPU, the Athlon64 X2 6400+. I'm waiting for the Phenom's to drop in price before picking one up next summer, hopefully.

[trickchpocz]

Originally Posted by sneaker98

Nice!

I'm currently using an older 125W CPU, the Athlon64 X2 6400+. I'm waiting for the Phenom's to drop in price before picking one up next summer, hopefully.

Hi, I am new to this forum and from USA. I've read this whole forum and review/award about the K9A2 CF.

I orginally bought the version K9A2 CF V1 in January2008 and later bought the version 2 (K9A2 CF V2) at the end of April 2008.

Please note: that the 4sqare regulators between the the PWM and cpu 1 R50 AND 3 R25'S. Tthe k9a2 CF V1 are all R25. The new K9A2 CF V2 has 4 R50'S and included the heatsink for the PWM. I am using a Phenom 9750+ Quad. It runs great and I have been using this over 10 hours a day including the time I have spent with crysis and need for speed using the ati Radeon HD 4650 1GB 128-bit GDDR2. It runs cool and does fine with the 125 watt 9750+.

The k9a2 cf V1 was a great board as well, it seemed like a rock solid board that could work under demanding loads. I liked the board so I bought the K9A2 CF V2 when I finally purchased the Phenom back in April 2008. I had the same idea to add a heat sink and fan to the north bridge and PWM. Be aware that the K9A2 CF V2 has Higher Power regulators.



Regarding:

jim48509 15th April 2008, 09:13

Looking at the original K9A2 CF and the V2 the only visible difference appears to be a heat sink on the PWM's.
That would lead one to think that the PWM rating is ok just the cooling is rubbish, could fittimg a heat sink to the PWM's on the original CF enable those of us with the board and a 125W cpu to run it at what is was supposed to be? ( Currently my X2 6400 is clocked at 2.8 Ghz )

On the global web site they have put the V2 with the original board but the V2 cpu support for 125W X2 6000, 6400 is listed as " under test "