Tired Black slots and lowering to 3.6Ghz and 1Ghz ram loose as loose timings and way more than enough voltage for everything. Hell, I even tried a new SATA cable. thing is hooped
Tired Black slots and lowering to 3.6Ghz and 1Ghz ram loose as loose timings and way more than enough voltage for everything. Hell, I even tried a new SATA cable. thing is hooped
still no luck with the Premium ? :(
edit : you can downgrade with Asus update 61002 (see u on msn later, will explain)
Thanks Simon ;)
Update: Found ou tthat I can run any stablility test I want and pass, except SuperPI. Never heard of that in my life. I mean, unstable is as unstable does... I am truely puzzled.
Last think I can think of is a downgrade and see what happens...
Hope you work it out - I just remebered that I previously bought 2x2GB 6400 Gskill PQs when they first came out. I couldn't get them to run at even DDR800 on a P5W nor a P5K deluxe so I RMA'd them and got 4x1GB Ballistix. I also sometimes find that superpi 1.5 fails to run although I run prime95 and anything else with no problem.S ometimes it executes but fails straight away on 1MB run . Subsequent runs are normally fine.
Warning - if you do decide to try an reflash with new Asus update remeber to load optimal setting beforehand. I am very wary of using asus update as I killed my p5k deluxe with it as the BIOS flash failed to verify after erasing EEPROM but I had left the overclock setting applied - still I then got to buy the Premium after RMA so it worked out well for me. Other not so lucky! Still you dont seem to have the choice of using EZFLASH and USB stick if you want to regress so best of luck.
It looks like my CPU has hit a wall at 3.4 GHz.
I was fully stable at 9x370, but when I moved up to 9x400, I pasted Super pi 32m OK, but would not get past 2seconds in Orthos. I upped my Vcore to 1.55v, and tweaked some of the other settings but still had no look.
I moved back down in tens, but I had the same problems until 3.4 GHz
Anyway I dropped to 8x425 3.4GHz and stress tested fine, so I think I’ll stay at this because my components are not top end overclocking parts. I’m still really happy with my results though.
I’ve just built a test station, so when I can afford a better CPU and faster ram I’ll build a dedicated bench rig.
Still think this is a great board.
Just like to say a big thank you to sesdave for the advice and links.:up:
BIOS Settings
AI Overclocking [Manual]
CPU Ratio Control [Manual]
Ratio CMOS Setting [8]
FSB Frequency [425]
PCI-E Frequency [100]
DRAM Frequency [DDR2-850MHz]
DRAM Timing Control [2T]
CAS# Latency [4]
RAS# to CAS# Dela [4]
RAS# Precharge [4]
RAS# Activate to Precharg [15]
TWR [AUTO]
TRFC [AUTO]
TWTR [AUTO]
TRRD [AUTO]
TRTP [AUTO]
DRAM Static Read Control [Disabled]
Transaction Booster [AUTO]
Clock Over-Charging Mode [AUTO]
CPU Spread Spectrum [Disabled]
PCIE Spread Spectrum [Disabled]
CPU Voltage [1.4750v]
CPU Voltage Reference [AUTO]
CPU Voltage Damper [Enabled]
CPU PLL Voltage [AUTO]
DRAM Voltage [2.10v]
FSB Termination Voltage [1.30v]
North Bridge Voltage [1.40v]
North Bridge Voltage Ref [ AUTO]
South Bridge Voltage [AUTO]
My D9GMH wasn't very stable with 0504 either (wouldn't run memtest even at 900/c4/2.4v but fine on another board)... Unfortunately downgrading to 0404 killed the board! :mad:
try seeing if you can up it with PLL=1.6.
I have an E6850 I bought late July last year and used it for 1 month before moving to q6600. Does 3.6 on stock volts on this board. I have a prime run somewhere unless it got deleted in one of my many reinstalls. They joy of vista x64-lol! Let you have it for half what I paid if you want it- drop me a PM if you are interested.
Thanks for the offer, but I’ve just bought this old thirties semi, that needs totally renovating and every penny I own has had to go in to that. When I say renovating I mean it too, there are 20 windows to replace. It’s needs a complete central heating system because the old lady (God bless her) who owned it never had it put in, and to make maters worse I have to have a new gas pip laid up the drive too for the supply.
It’s never had a kitchen fitted, in fact I don’t think anything has been done too this house since the day it was built. Mind you I love getting my hands on old properties because they are full of so much character.
This old place had masses of interest when it went up for sale because of it’s location, my next-door neighbour is a Judge. lol
One good thing though, I’m making the garage in to a workshop, so I’ll be able to do loads of case modding and bench testing amongst other things.
So it’s going to be quite some time before I’ll have any spare cash for my hobbies.:(
Hi,
Just played today with the board. I'm impressed.
In the first run, everything set to manual on lowest setting, it fired up my Q6600 at 9x400 Prime95 Small FFT and finally OCCT RAM stable (this one is very hard to get stable on high FSB and Fast memory with a quad core as it stresses the RAM-NB much).
I than, played with it about 2h and I'm running smooth 3.8GHz (8x475) so far Prime95 Small FFT and OCCT RAM stable, both for 2h each. This MB is impressing. When I read through the Maximus topic and all other X38 boards people fighting to get it stable at 9x400, I just :rofl:
Above 3.8GHz, my Q6600 needs 0.05v increase for just 25MHz more speed, so worthless as the temperatures are already high for my setup
I'll target now full stability with 12h runs of Prime95 and OCCT in RAM mode. When done, I'll tighten the RAM timings and play with Static Read Control and Transaction Booster. Once done, I'll post my results with tons of photos.
By the way, the P5K Premium runs much cooler than my P5B Deluxe, but for this OC my board is already at 47°C with an OCZ RAM Cooler and an HR-05 IFX with a 80mm FAN at 5v on the NB, so it was usefull to change the stock cooling
I also run my Samsung HD, an SATAII 160Gb flawlessly. It looks like the problems are with new high capacity disks (above 250Gb)
And finally, many thanks for all of you, especially Sesdave for posting your setup and OC settings that helped me much to start with
Back soon with a full imaged review
Only regret: I lost so many months trying to get my P5B deluxe stable while I did 250Mhz better clocks on this one in a couple of hours, it rocks :up:
I used to have ap5b-dlx b4 this p5k-prem.On my p5b i got my E6300 to 3.9ghz,which was nice,and never had any problems with it at all.The most i've had out of this E6750 is 4ghz(500fsb).It will post at 520fsb but no windows,for some reason,even if i go up to 1.6vcore.Maybe theres some of the other settings i need to tweak but i dont know.As far as i'm concerned,the p5k-prem is a pretty decent reliable board.
I'm still digging mine. Out of all of the boards that I've owned this one has stayed in my machine the longest. my G0 6600 is a bit of a pig on volts, but it's been at 3.825ghz since the day I dropped in the machine and hasn't let me down yet. I think that reason for it's success with me, is that I stayed at the 0204 bios which is what it was boxed with.
I tested both 9x423 and 8x475. Both are very easy to get stable on this board. I have a good CPU doing the exploit at 1.4375v in bios (1.432 load). Temperatures are rather high though (66°C on hottest core, 59°C on lowest despite lapping it two times till 1000 Grift). Those are Prime95 Small FFT for some hours, but at 24°C-25°C ambiant (closed window so that in summer I don't have very bad surprises)
I did Everest, Sandra and 3DMark06 full suite of benching to see which is best between 9x423 and 8x475 at varrying memory timings. 8x475 looks like a nice target. It has a little slower memory (950 instead of 1116), but it can handle 4-4-4-10 timings with Static Read Control enabled, at lower volts (testing 2.20v while 1116 needs 2.30v for worst timings). Everest and Sandra benchmarks show an impressive boost with static read control enabled.
I trust only OCCT in RAM mode for RAM stability tests and Prime95 Small FFT for the CPU. Later, I stabilize it with some 12h of F@H, some Sandra, Everest and other benches. Unlike many people here, I look for a rock stable system, not a benching flaky one.
Soon, I'll post a full review with all my benching performance marks.
I opted for 0504 bios, looks enough stable for me as I'm limited by the CPU heat. My memory is clocking where I like it too, far above its references, at least latency wise. What are your temperatures at full load with small FFT? And at what ambiant temperature?
This q6600 is a very early version, L723B509 too be exact so it's 1.275v stock. It takes a sh1te load of v's to get it above 3.6ghz so my small fft temps cruise at around 60C. My ambient is high actually, around 23C...when it's a nice 20C, my load temps directly reflect that difference by 3C. Right now, I'm idling at 34C, but it's super cold out so the heat is cranked.
Looks like it's where water will push us. It is really interesting how the temperature/vcore/frequency relation went with the last Q6600 G0 chips. I have an older Q6600 G0 L734B doing 3.6GHz at 1.43v with small FFT topping at 60°C while my L740B does 3.6GHz at only 1.33v, but at a same temperature with a 7°C difference between cores. Lapping it two times till 1000 grift didn't help much on my bowed Apogee GT. I also must say I have the 5 fans on the MCR-220 and PA120.3 at 5v all the time. In summer, speedfan would kick in where high load is needed and give me some headroom.
On the Q6600 G0 official thread, many users noted the same thing. Till now, the most influence on temperature was vcore, but on these new chipse, the frequency looks like to be a major impact too. Sad that I'm limited by the CPU because of temperatures despite my nice watercooling rig. Anyway, I'm happy if I get it stable at those settings
Hi guys ive just built up this board and need some advice please. Im stable at 3.4Ghz well i think i am as it pass`s most of the stress test`s but sometimes it seem`s to reboot when loading windows ,say once out of every 8 boot ups. I know its not alot but i would like to know what volt settings i should use for my nb,fsb ect.
Cheers Paul
Here it is, my P5K Premium plunge.
Here's the box and motherboard. It is rev. 2.00G (the only revision I know about!). If I do believe previous topics, I have a new pack (blue box with new manual and all red caps)
http://www.izipik.com/images/2008021...l7aqx9-01r.JPG
http://www.izipik.com/images/2008021...kjrs09-02r.JPG
For the discussion on new/old packs, look these links:
http://www.xtremesystems.org/forums/...&postcount=377
http://www.xtremesystems.org/forums/...22#post2490022
First thing is to remove the crappy stock cooler (in my opinion, it is crappy, but I didn't give it a single chance)
http://www.izipik.com/images/2008021...thbwnoo-03.jpg
Looks easy once removed but it took me 45mn. The holes of the push-pins are machined less than 0.5mm to the integrated circuits on back of the PCB. So removing and placing the push-pins is a risky thing. You need much care. Also, even that I never fired it up, the ASUS thermal compound was sticking solid on the SB and NB. I had to give it a serious heating time with a hair drier. Also, take care here, not more than 20-30 secs. Better test each time, than give it another shot of hot air. The heatsinks should come without any effort. Removing the mosfets coolers is much easier as there's only a thermal pad.
Harder part now: removing the crappy solid and sticking ASUS thermal compound. You need a lot of alcohol and patience. Don't exert much pressure on the naked NB. The SB is covered with and IHS, so it is more resistant to pressure. To remove the compound quicker, I gave it some more hot air shots (but be carefull again).
The problem is that the SB, NB and first mosfet heatsinks are soldered with a heatpipe system. If you want to reuse the SB heatsink, you'll have to cut that heat pipe and loose your warranty. I agree that NB and mosfets coolers are not enough for high overclocks, but the SB would be more than enough. Having to buy a new one is a waste of money. There are very cheap ones hopefully, like the Zalman ZM NB-47J. The problem is that the SB is in the length of the PCI-E slot. A long dual slot VGA card (like my 8800 GTS 512) will conflict with any SB cooler higher than 10-11mm. There are low profile SB heatsinks at Enzotech and Petra's shop, but they are some expensive and hard to obtain. Thus, I went with the aluminium Zalman ZM NB-47J which I cut a bit so it can fit.
Now, placing my two HR-09U type 2 on the mosfets, my HR-05 IFX on the NB and a Zalman ZM NB-47J on the SB. Thermalright web site shows that you need a HR-09U and HR-09S both type 2 for the mosfets. If you're watercooled, two HR-09U type 2 will fit perfectly. But, on air cooling, a HR-09S type 2 could be needed as the U variant can conflict with the CPU air cooler. Be carefull that S type can conflict with some removable motherboards plates. Check the specs on thermalright site before buying them.
The layout of this motherboard is one of the worst I'v seen. The HR-05 IFX won't fit horizonally because of the RAM slots too close to the NB. It also won't fit vertically because it will interfere with PCI-E card (heuh, I'm no longer sure of it) and it will cover the CPU cooler fixing holes. We're left with a diagonal fit. If you're aircooled, take care as it can conflict with CPU cooler as the NB is too close to the socket.
http://www.izipik.com/images/2008021...rmq5jhf-04.jpg
http://www.izipik.com/images/2008021...2hvs4fr-05.jpg
In this last picture, you can see the needed clearance on the SB with a VGA card such as the 8800 GTS 512. The card is so long that it will cover the misplaced SATA ports (SATA 1 and 3). The only solution is to use angled SATA cables. But the angle will than render useless the ports SATA 2 and SATA 4. So, in all cases, with such VGA cards, you loose two SATA ports. ASUS really did crap here.
To continue with layout issues, look at the Analog CD Audio connector near the PCI 1 slot. The 8800 GTS 512, being dual slot, will conflict with the connector. I could plug the audio cable, but I have to force the card and the mb is bending a bit in that place :eek:
Now, the system mounted
The PA120.3 with 3 Scythe S-Flex SSF21F at 5v, speedfan regulated:
http://www.izipik.com/images/2008021...2mfcjba-06.JPG
The lateral panel modded with a 120mm fan and the MCR-220 mounted on the rear with two Delta fans fixed at 5v
http://www.izipik.com/images/2008021...ngk14wb-07.jpg
Now, a closeup to see the layout problems
http://www.izipik.com/images/2008021...ajjc2kb-08.jpg
In the circled area N°1, we see that the RAM slots are too close to the PCI-E card. It will be hard to fit a DDR cooler. In my case, the OCZ XTC Memory Cooler can't fit as it should. I had to remove the lower fixation and it is suspended only on its top. Also, it is so close to the VGA card that I recovered the lower part with an electrostatically protective film to avoid a short on the VGA card.
In the circled area 2, we see the 8800 GTS 512 blocking the SATA ports. I could use angled cables, but as you see, the ports 2 and 4 are dead.
Everything is now mounted. And there's a last bad layout (yes again). The PCI-E slot is too close to the bottom of the card compared to my previous P5B Deluxe. The 8800 GTS 512 conflicts with my pump, it was hard to fix it despite I have a rather big tower (Thermaltake Shark)
http://www.izipik.com/images/2008021...glez9cf-09.jpg
Some discreet lights:
http://www.izipik.com/images/2008021...6lf9ql0-10.jpg
Now, time to see if all this work is worth it. Well, here are my results, rock solid, with my Q6600 L740B (check my signature)
Near 12h Prime95 Small FFT:
http://www.izipik.com/images/2008021...ni4x877-13.jpg
And, the best program to test the NB/RAM stability with these agressive settings on a quad core: OCCT in RAM mode
http://www.izipik.com/images/2008021...cig6srp-14.jpg
Some SuperPi runs:
http://www.izipik.com/images/2008021...SuperPi_1M.jpg
http://www.izipik.com/images/2008021...uperPi_32M.jpg
And 3DMark06 run
http://www.izipik.com/images/2008021...1-3DMark06.jpg
This is nothing close to a world record, but, the voltage settings are impressive, here are the bios settings to achieve it: (edit: lowered vNB to the minimum now)
http://www.izipik.com/images/2008042...h-P1020679.JPG
http://www.izipik.com/images/2008042...g-P1020680.JPG
My old P5B Deluxe couldn't stabilize my chip under OCCT above 390 FSB with same components. It also was impossible to over clock my DDR2 above 900MHz. So I'm quiet impressed.
About the voltages, I didn't try lower as I think they are already quiet too low. The vPLL did give me neither less vcore nor better overclocking. It is fine at 1.5v. The NB and CPU Ref voltages would give me random lockups on startup and within Adobe Encore CS3 if set lower than the maximum.
I see my volts are one of the lowest for such a high FSB on a quadcore at 3.8GHz. Maybe I got a good board, but for sure the NB and RAM cooling are helping. At my OC, with an excellent incase airflow, the system temperature is at 48°C (25°C ambient) after some hours of OCCT in RAM mode. I do believe that an active cooling on the NB is the only way to grant you a high FSB on a quadcore.
I also see a lot of people putting vPLL and clock over charging on Auto. A good advice is never put sensitive voltages (vDDR, vcore, vFSB, vNB, vPLL) on Auto. vPLL is a CPU killer, and often useless except some handpicked CPUs. And on ASUS boards at least, the voltage will increase by its self when you overclock on Auto and you have no way to monitor the killer vPLL. My piece of advice...
The Static read control feature gives the memory a dramatic boost in performance. I couldn’t enable Transaction Booster but relaxing it to 0 instead of 3 worked and gave the memory benchmarks another impressive boost. SuperPI 32M improved by no less than 5 sec with also a remarkable 3DMark06 improvement.
Finally, here’s a SuperPI 1M at 4GHz. I didn’t even check for stability as I didn’t like to bump many volts in my components since I’m limited by the heat from the CPU for extra overclocking (should get a new CPU WB instead of my bowed Apogee GT maybe not well contacting the surface of my lapped IHS)
http://www.izipik.com/images/2008021...Pi_1M_4GHz.jpg
I made many tests using multiple combinations (8x475 MHz and 9x423MHz with different memory speeds and timings). I also gave the strap 266 a look. It is a very interesting setting giving some more memory performance and low latencies. The strap 266 settings need high voltage on RAM (2.30-2.35v to stabilize it) and also higher volts on the NB. My RAM is rated at 2.35v 1200MHz and CAS5, so it could handle it, but for the relative performance gain…
In yellow is the setting I chose for 7/24 use. I also added now results with new bios 0612
http://www.izipik.com/images/2008042...bi7-table1.jpg
It looks like the 8x475MHz setting at strap 266 and CAS 5-5-5-18 is the best performer though if you don’t mind putting 2.3-2.35v in your RAM
You can also see the important boost by relaxing tansaction booster to 0 instead of 3
Bios 0612 adds also some gain in memory performance. It is reported to give better memory overclocks
Here’s also a Crysis benchmark result at my settings:
Quote:
16.02.2008 06:15:44 - Vista
Run #1- DX10 1280x1024 AA=2x, 32 bit test, Quality: High ~~ Last Average FPS: 24.10
Run #2- DX10 1280x1024 AA=2x, 32 bit test, Quality: High ~~ Last Average FPS: 24.41
Run #3- DX9 1280x1024 AA=2x, 32 bit test, Quality: High ~~ Overall Average FPS: 24.39
Run #4- DX9 1280x1024 AA=2x, 32 bit test, Quality: High ~~ Overall Average FPS: 24.53
Run #5- DX10 1280x1024 AA=2x, 32 bit test, Quality: VeryHigh ~~ Last Average FPS: 14.16
Run #6- DX10 1280x1024 AA=2x, 32 bit test, Quality: VeryHigh ~~ Last Average FPS: 16.65
Run #7- DX9 1280x1024 AA=2x, 32 bit test, Quality: VeryHigh ~~ Last Average FPS: 16.66
Run #8- DX9 1280x1024 AA=2x, 32 bit test, Quality: VeryHigh ~~ Last Average FPS: 16.76
Run #9- DX10 1280x1024 AA=2x, 32 bit test, Quality: Custom ~~ Last Average FPS: 17.19
Run #10- DX10 1280x1024 AA=2x, 32 bit test, Quality: Custom ~~ Last Average FPS: 17.50
Run #11- DX9 1280x1024 AA=2x, 32 bit test, Quality: Custom ~~ Last Average FPS: 17.70
Run #12- DX9 1280x1024 AA=2x, 32 bit test, Quality: Custom ~~ Last Average FPS: 16.86
I must say I'm impressed how easy it can be overclocked. It is really not a frail board like the X38 motherboards as I read in their topics. You put your volts and settings and you quickely know if it handles it. In my case, I'm only limited by my other components. Also, two features that definately should be enabled are: static read control and transcation booster. Sadely, when you overclock, you can't enable them both. Transaction booster won't work on important memory overclocks. Despite this, disabling the transaction booster and trying not to relax it much (0 instead of 3) would still give an important boost in benchmarks that you also see in SuperPI and 3DMark06.
A note about Samsung/WD SATA 2 drives. My Samsung 120Gb drive works without any issue. I also made the jump to a Western Digital Caviar SE16 WD6400 AAKS without any issue. On ASUS forums, the issues concern early motherboard samples. You can know your build date by serial number on pack. Mine is 78xxx meaning 2007 August. MB from 77xxx and before are at high risk to be affected by the bug. You can RMA your board to get a newer one.
Well, hope this complete view can help someone mastering this nice board. Feel free to comment on my settings / results / interpretations.
edit 27 April 2008
edit 12 May 2008Quote:
Added underlined text:
- Updated bios settings screens
- Added Bios 0612 feedback
- Added GTL Ref Voltages issues
- Added WD/Samsung SATA2 HD issues workaround
Quote:
Bios 0612 gave me memory performance improvement (cf above table) but I begun getting some random hang-ups on windows startup. During daily use or benching it was still stable Prime95 small FFT and OCCT in RAM mode. I couldn't sort it out increasing vNB and vFSB. Finally, I realized it was memory issue, now needing looser timings (it became unstable) or more voltage (2.20 instead of 2.10v with bios 0504). Since I opted for 950Mhz CAS4 to have 2.10v on my RAM, and since I now had to give it 2.20v, I opted for a larger bandwidth setup (if it has to burn, at least it gets for respected performances :D). Here are my expierience facts
- 8x475 at strap 266 with 1186 DDR2 CAS5 and 2.25v were perfectly stable on this new bios. It also gives a good performance increase compared to strap 333. I didn't need to boost my NB or FSB voltages
- 8x480 at strap 266 with 1200 DDR2 CAS5 and 2.25v needed 1.30v FSB instead of 1.20v to stabilize the CPU at 3.84GHu instead of 3.80GHz without adding vcore. So, now, this is my new setup, still rock stable and no more hang ups on boot.
- My Q6600 is fully stable P95 small FFT at 3.90GHz (9x434MHz) at PLL 1.5v and vFSB 1.30v but a vcore of 1.47v. I couldn't stabilize the 3.9GHz at 8x488 or even 8x485 despite any increase in vFSB, vPLL, vNB... It could be the CPU, the memory or the motherboard limiting me. I'd have to try strap 333 to exclude memory from equation and to loosen NB stress to partially exclude motherboard. Maybe I'll test that later, but no real benefit as I won't gain much CPU speed and the memory will loose performance
Here are screens of this new setup. Note that I opted for shorter periods of benching, especially with OCCT in RAM mode. OCCT will burn the RAM, and I've never seen errors after 2h of run in RAM mode. Also, at the end, you'll find all bios screens for this config
I could tweak the trfc and other subtimings (it seems stable with a trfc of 25 and settings of 5-5-4-10-4-25-3-3-3), but it only gave a poor boost in memory copy/read performance, so not worth going the hassle of OCCT RAM stability sessions to tweak it
http://www.izipik.com/images/2008051..._profile_1.jpg
http://www.izipik.com/images/2008051...-_OCCT_RAM.jpg
http://www.izipik.com/images/2008051...1_-everest.jpg
http://www.izipik.com/images/2008051..._1_-3DMark.jpg
http://www.izipik.com/images/2008051...SuperPI_1M.jpg
http://www.izipik.com/images/2008051...-bios_-All.jpg
Nice m8!!
Just thought i would post some pics of my rig .
http://i249.photobucket.com/albums/g...7/P1010688.jpg
http://i249.photobucket.com/albums/g...7/P1010691.jpg
Its just a shame that the nb and vrm`s dont give out temp readings
Nice and very clean setup. I see you chose the HR-05 SLI for the SB, quiet a big investment, but very clean setup I have to agree. I think though that your Reserator is limiting you in temperatures as your circuit is very restrictive too. But I can think you have a very silent setup...
Otherwise, I just could set Transaction Booster on Disabled but relaxed to 0 instead of 3, it gave me a huge improvement in everest. Will update my post once I finish a new 10h OCCT RAM stability test in that setting.
http://www.izipik.com/images/2008021...j-Untitled.jpg
My HTPC is finally complete and running as planned (minus the SuperPI issue)
Specs are in my siggy.
http://img.photobucket.com/albums/v6...DSC_0040-1.jpg
http://img.photobucket.com/albums/v6...DSC_0043-1.jpg
http://img.photobucket.com/albums/v6...x/DSC_0033.jpg
http://img.photobucket.com/albums/v6...DSC_0016-2.jpg
http://img.photobucket.com/albums/v6...x/DSC_0032.jpg
good old AMD64 fan cooling the chipset/ram :D ;)
God I love those fans. I even cut a 70mm hole in my Xbox 360 and mounted it internally right before the CPU heatsink. Fit perfectly and has helped bigtime. It is the only (easy) source for 70mm. Thank god I had about 12 AMD K8 CPU's, many of which I clipped HS/Fan from them :)
This board is an excellent overclocker and stable as heck. It is also very easy to overclock. I just don't see why so many people are having trouble with it. (Knock on wood)