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Asrock FM2A85X-ITX - the ultimate FM2 ITX mobo to lust for? - Page 7

post #61 of 213
Quote:
Originally Posted by MacClipper View Post

I had no problems running it at 4.4GHz but was actively cooling the mobo with a 80mm fan cos I used the Corsair H55 CLC. See post #26.
Code:
using a larger Phenom II cooler

imo, AMD stock cooler designs (straight blow down) are probably inadequate for cooling the surrounding components on a cramped ITX mobo, perhaps a larger orb style cooler or the Antec SpotCool may help here.

HTH

Sure not optimal but it is over twice the size of the stock one that came with the 5700 (you can definitely throw that one away). The 80mm fan is washing over the immediate MOSFETs and the VRM sink great but doesn't extend past that. A 120 would probably give the bridge sink a breeze which is (I'm assuming) where the temp is read and drop it like a rock. Just weird that my A75 MB temp was that much cooler with even a smaller setup but that can be due to it being an 85x chipset like I mentioned before.
I'm not dumping any more money into mine especially after the A75 debacle sapped me of more money than I was expecting. But I would definitely recommend a 92-120mm down draft solution to keep the entire thing cool.
post #62 of 213
So is there any way to attach a heatsink to this board that requires a plate under the board? As terrible as the stock a10-5700 heatsink is I'd want to be able to use my noctua on it. Would you just need to fashion yourself some offsets?
post #63 of 213
Dbl post
post #64 of 213
Gotta say the mobo is a lot of fun to play with. Got it the day before yesterday, but didn't have a chance to test it till today.

Vcore, NB voltage, NB freuency... I'm impressed.
VRMs under the heatsink don't run hot at all. What is hot is 6 resistors (?) marked R36. The South bridge is neither hot nor cool (subjectively, not hotter than that of my Biostar A85W). Seated both heatsinks with MX4. Just in case

Cons:
-What bothers me is the difference between the chosen VCore and real one. Take a look at the photos.
- Had to set GPU frequency at 1083 (or 1086. Don't remember exactly). It cannot be increased by +1mhz. Only around 70mhz increments available Bios 1.20.
-No way to install a back plate (to be expected. This is a Mini ITX)













De-lidded cpu is 2.1mm shorter than it's supposed to be, so I had to file some fins on the cooler (Zalman CNPS8000B) down. Ram is GSkill ripjaws X series 2133mhz 11-11-11-28.
I'm yet to put all the stuff into a IN WIN BP655.300TB3L case. Hopefully, the APU won't run hotter than 70C
post #65 of 213
Think you may have voided your warranty. smile.gif
post #66 of 213
Nope tongue.gif The thermal pad can be put back. As for the APU- don't care.
post #67 of 213
I own a BP655. Been running it for 3 years with moderate power draw, power supply is decent quality (can be noisy at 60% load or higher). I initially had heat problems when I added a video card, but I hole sawed out two 2" holes over the video card side of the case a week after I got the case - paired with a Sapphire Radeon 4650 LP. That card ran pretty cool under full load. (but failed on me a year later.)

I was running a Zotac G9300 w/ Celeron e3200 @ 3.16 ghz stock voltage. CPU temps reached max 62c full load, added a EVGA GeForce GT 430 running 75c 100% full load (I never allowed the fan to get higher than 70% with the software control, because it was noisy.) 75c was well within tolerance of the card and I ran that for about 2 years straight, not a single hiccup. The power supply still runs great.
All the hardware is in a box now.

I plopped in the A10-5700 and FM2A75M-ITX, the very next day it exploded. Major performance problems during that time .. especially whenever the thermal throttle would kick in (this was very obvious when it did - even for 2D apps and desktop software.) I didn't figure that this is what was occurring, I thought initially my powersupply with the BP655 was starting to fail - it was running full fan speed ALL the time (even in idle). No components other than the mainboard were damaged though, so that's great. The powersupply works as it did after the board exploded too, I had hooked up my old Celeron setup to test loads to see if there was any suspicious behaviour from the power supply. Ran fine under full loads.

What I don't get is this - The Celeron e3200 has a TDP of 65w. So does the A10-5700.

The e3200 - when paired with a video card - would spin the powersupply fan down to minimal noise under idle or watching movies 480 / 720 / 1080 / web browsing or otherwise light tasks.
Zotac generally has decent power efficiency in my experience with the 5 products I have purchased from them, never had a single one of their products fail on me, or otherwise generate excessive amounts of heat.

I didn't pair a video card with the A10-5700 / FM2A75M-ITX. At idle in windows, or light tasks, the powersupply would spin to 100% speed. While the processor itself was using no more than rated TDP, the board itself was a different story.
My postulation on this was that the efficiency of the power delivery into the processor was EXTREMELY poor. Less than 60%. So the actual power draw was more like 100w, mad.gif ,which is probably what caused the VRM fire... just a guess, though.

You can rely on the BP655 to hold through whatever you throw at it. It's decent quality construction, included case fan is garbage so replace that (If you can). The case itself is a bit ugly when it's on, but you can easily fix that with custom modifications (if it annoys you .. The power LED is quite annoying ..)
If you plan to add Dual Graphics to your setup, definitely drill two circular holes in the side of the case - it needs ventilation for any card above 40w TDP.

EDIT : the powersupply included with my BP655 is a 200w TFX.
Edited by Mildaine - 2/7/13 at 6:20pm
post #68 of 213
Thank you very much for such a valuable input! My case's PSU is 300W (that is a new revision- PSU is 300W + 2 USB 3.0 front panel ports). And all of that is just for $70 smile.gif Should be more than enough to feed a A10-5800K + HD 6670.
BTW- to drill some holes is exactly what I've been thinking about. There is no clearance for the graphics card cooler at all.
The case is indeed ugly. But it is something I can live with. Bought a IN WIN BP-Series BP671.200BL for my mom. Was impressed. That chap was kinda pretty and of high quality. Unfortunately, BP671 is out of stock...
The case fan is already replaced with an Arctic Cooling F8 80mm PWM smile.gif You read my thoughts.

As for the mobo. Applied Coollaboratory Liquid PRO. It's like night and day compare to a MX4 thermal grease. The former outperforms the latter by 6-7 C. Not to be applied onto the heat spreader, though. Will never wash away. Only for de-lidding. purposes...

VCore grinds my gears. If set at 1.45V., it will appear to be 1.4.
1.4V-> 1.35 or 1.36. And so on...
Trying to get memory to work at 2400. Not stable even at 1.675V & 12-13-13-35 mad.gif

I'm pretty sure the problems of FM2A75M-ITX boards have been solved in the new mobo and won't happen again. Respect NewEgg for stopping to sell those faulty boards. Better late than never.

Wow, NewEgg`s dropped the price for FM2A85X-ITX by $9. Now it's $107. I paid $116 on Feb 1st.
Edited by peter-mafia - 2/7/13 at 7:09pm
post #69 of 213
Quote:
Originally Posted by peter-mafia View Post

Cons:
-What bothers me is the difference between the chosen VCore and real one. Take a look at the photos.

That's normal, it's vdroop. And you should have see a difference between what's shown by the mobo and the real voltage which you get get by using a DMM.
Quote:
Originally Posted by peter-mafia View Post

VRMs under the heatsink don't run hot at all. What is hot is 6 resistors (?) marked R36.

The "R36" chips are the chokes and they're nice, the MOSFETs look nice too, they're Lower RDS(ON) MOSFETs it seems.

Do you know what's written on those MOSFETs? in blue here:
Quote:
Originally Posted by peter-mafia View Post

Ti-89 Titanium
(13 items)
 
   
CPUMotherboardRAMHard Drive
Motorola 68k @16 MHz Ti-89 HW4 256 KB 2.6 MB Flash ROM 
OSMonitorPowerCase
Ti-89 OS 3.10 LCD Dot-Matrix 160x100 4x 1.5V AAA Ti-89 HW4 Black 
CPUMotherboardGraphicsRAM
Intel Core™ i7 930 Gigabyte GA-X58A-UD3R 2.0 Gigabyte GTX 470 SOC G.Skill RX 2x4GB 1600C8 
Hard DriveHard DriveOptical DriveCooling
PNY Prevail Elite 120GB Hitachi 7K1000.C 1TB LG GH24LS50 Noctua NH-C12P SE14 
OSOSMonitorKeyboard
Windows 8 Pro x64 Lubuntu 13.10 x64 Samsung BX2250 Logitech Illuminated 
PowerCaseMouseAudio
Be Quiet! S.P. E⁷ 600W Fractal Design Core 3000 Logitech G300 AKG K240 Studio 
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Ti-89 Titanium
(13 items)
 
   
CPUMotherboardRAMHard Drive
Motorola 68k @16 MHz Ti-89 HW4 256 KB 2.6 MB Flash ROM 
OSMonitorPowerCase
Ti-89 OS 3.10 LCD Dot-Matrix 160x100 4x 1.5V AAA Ti-89 HW4 Black 
CPUMotherboardGraphicsRAM
Intel Core™ i7 930 Gigabyte GA-X58A-UD3R 2.0 Gigabyte GTX 470 SOC G.Skill RX 2x4GB 1600C8 
Hard DriveHard DriveOptical DriveCooling
PNY Prevail Elite 120GB Hitachi 7K1000.C 1TB LG GH24LS50 Noctua NH-C12P SE14 
OSOSMonitorKeyboard
Windows 8 Pro x64 Lubuntu 13.10 x64 Samsung BX2250 Logitech Illuminated 
PowerCaseMouseAudio
Be Quiet! S.P. E⁷ 600W Fractal Design Core 3000 Logitech G300 AKG K240 Studio 
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post #70 of 213
So does this board seem safe? with the A75 which burned on me as well it was the first time I experienced over clocking causing actual acute damage to a board.. I thought if I overdid the settings it'd just not work, and I'd have to decrease the settings, not have my components getting broken..

So when I say safe, I mean is it safe to overclock, as it is? And if not is it safe as long as I cool the vrms, chokes and mosfets better and keep their temps in check?

I think I had better luck with my A75 then most though, I had used mine with an A10-5800K at 4.4GHz for a week, and then decreased it to 4.2 to be a bit more stable and had run that for another 4 weeks non-stop save for some restarts. I was running Ubuntu 12.04 with "ondemand" CPU scaling on, so it was at 1.4Ghz when not in use, but I was folding on it non-stop. Lately for some reason it was only running at full frequency 40% of the time, so I changed so I removed the scaling, and after a few hours it wouldn't boot any more. I brought the CPU and MB back to the shop and when they tested it for me the motherboard went all firefest on their test system.
So yeah, I was lucky it didn't do that at my uni(where it was folding for me) where it broke probably at night when I wasn't there, potentially burning down my lab. :O
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