i7 920 3836A756 @4610Mhz AIR - DFI UT X58-T3EH8

eva2000

eva2000

Gawd
Joined
Apr 14, 2002
Messages
539
Finally took off the training wheels for DFI UT X58-T3EH8 after having the motherboard for past 7 days, I'm starting to get the hang of things :D

My first Super Pi 32M bench at sub 8min with Core i7 3836A756 on Thermalright Ultra 120 air cooling!

Had to turn off Hyperthreading to reduce the heat output and had to go back to dual channel kit, 2x1GB Corsair DDR3-2133C9DF Dominators as it's only memory I have capable of up to DDR3-2200Mhz Super Pi 32M stable.

With HT off, load temps were around 74-86C. Powermate wattage meter read ~290 watts idle and 305 watts load for Super Pi. I tried running Everest benchmark report (all tests) and measured ~530 watts load drawn from the wall but system rebooted @4610Mhz :D

For comparisons sake, at 20x133 = 2.666Ghz stock, Powermate wattage meter reads around 125 watts idle with FX5200 PCI video card installed.

Room temp = 24.5C

System specs
  • Intel Core i7 920 3836A756
  • Thermalright Ultra 120 Extreme + LGA1366 Bolt Thru kit + 2x 120x38mm Scythe UltraKaze 2000rpm 87cfm fans in push/pull
  • DFI LP UT X58-T3EH8 R.A51 - initial first release 12/18 bios
  • 128MB Gainward FX5200 PCI
  • 2x1GB Corsair TW3X2G2133C9DF Dominator 9-9-9-24 at 2.0v rated (Samsung ICs)
  • Ram cooling: 3x 60x25mm Sunon 23.5cfm Maglev fans
  • 750GB Samsung HD753LJ
  • Pioneer DVD-RW
  • 1KW Corsair HX1000 psu
  • WinXP Pro SP3 nLite fully updated

@4554Mhz​

First 32M run 21x217BCLK - so close to sub 8min!

spi32m_8m01s031ms.png


@4610Mhz​

I nearly managed to boot into windows to take screen shot at 21x221 = 4638Mhz, but guess either heat or BCLK ceiling was being reached. So settled for 21x220 = 4610Mhz :)



spi32m_7m54s375ms.png




pifast_19s03ms.png


Bench rig photos

IMGP9377.jpg


IMGP9384.jpg


IMGP9387.jpg
 
Nice work ! and a golden i7 ! From what I've seen on various forums, is 221-223 is the highest Bclk attainable. No one seems quite sure what the limitation is, cpu,chipset, etc.
 
that is awesome. but i wonder, 1.552v showing in cpuz, that means you probably have it at 1.6 in bios?

whats your 1M score btw?
 
socK said:
holy shit

how loud is it?
Click to expand...
no loud at all fans rated at 32dba :)

FragMagnet said:
Nice work ! and a golden i7 ! From what I've seen on various forums, is 221-223 is the highest Bclk attainable. No one seems quite sure what the limitation is, cpu,chipset, etc.
Click to expand...
thanks... Hazzan has posted benchmarks at 227BCLK and max validation at 232BCLK with same DFI UT X58-T3EH8 which is highest I've seen http://www.xtremesystems.org/forums/showthread.php?t=212483. Just waiting for him to share his bios settings - hopefully I can reproduce higher BCLKs with his tips :D

Casper312 said:
Thats some [H]ard shit, Good work
Click to expand...
thanks

aznmc16 said:
that is awesome. but i wonder, 1.552v showing in cpuz, that means you probably have it at 1.6 in bios?

whats your 1M score btw?
Click to expand...
thanks 1.552v = 1.525v bios, 1.6 cpuz = 1.5625v bios. 1M score is there for 4610mhz clocks above screen shows 8.812s

Mr. K6 said:
Wow, congrats, great chip you have there!
Click to expand...
thanks
PC_User said:
Nice job with the overclock! 2 fans on that hsf is killer
Click to expand...
Yeah i read how hot these i7s go so push-pull is way to go :D
 
Holy crap I don't see any temps-- have to checked to make sure the heatsink didn't melt?

Impressive that you can boot into Windows and get some screen shots!! You've got an excellent chip!! But does it fail when running a multi-threaded CPU stress tester like Core Damage???

When I load up all 8 threads at 4ghz and 1.475 vcore I hit 100°C :eek: within just seconds and the CPU throttles down to 950mhz!! Even when I'm at 3.2ghz I'll hit 100 after about 7 or 8 minutes.
 
Guys quoting myself from above

Had to turn off Hyperthreading to reduce the heat output and had to go back to dual channel kit, 2x1GB Corsair DDR3-2133C9DF Dominators as it's only memory I have capable of up to DDR3-2200Mhz Super Pi 32M stable.

With HT off, load temps were around 74-86C. Powermate wattage meter read ~290 watts idle and 305 watts load for Super Pi. I tried running Everest benchmark report (all tests) and measured ~530 watts load drawn from the wall but system rebooted @4610Mhz
Click to expand...
 
Well it's know fact things will get hotter with HT enabled and that super pi is single threaded so not much stress on multi-core processors :)
 
eva2000 said:
Well it's know fact things will get hotter with HT enabled and that super pi is single threaded so not much stress on multi-core processors :)
Click to expand...

Which goes to show how useless SuperPi is.
It's like 3Dmark...useless for real world usage.
No HT and only dualchannel ram...a nootered i7...would you run your system like that for real world apps and games?
 
i saw your other thread, so i tried with some 1.5v plus vcore also. did 215 bclk for 4515mhz, turbo enabled, ht off, triple channel ram @ 1720 8-8-8. hit 92c during 32mb superpi. after rebooting into bios i noted that my power regulation ckt was at 90c, nb at 81c and that was after it had cooled down for a while. but got my first sub 9 1mb super pi. at this speed it wont run prime95 (so what) but i played tf2 for around an hour or 2. will post some screenies when i get home. dfi looks good, but at this point not a lot better than my evga. i will see after oskar tweaks bios a bit.

real world apps and games obviously not the point here.


noticed your vdimm up around 2v. i guess you are not paying much attention to intel's 1.65v limit on vdimm either.
 
Atech said:
Which goes to show how useless SuperPi is.
It's like 3Dmark...useless for real world usage.
No HT and only dualchannel ram...a nootered i7...would you run your system like that for real world apps and games?
Click to expand...


Didn't realise that the only results that are allowed to be posted in this forum are the ones that conform to your vision of computing ? There are a lot of enjoyable aspects to this hobby, if you've limited yourself to one, well that's your choice. I may not do the 3dmark, or highest post as possible anymore, but I understand the challenge and fun of it. Since you understand these i7's so well, then you know there is no real world app that will take advantage of 3 channel over 2 channel mem, unless you're talking about synthetics, the exact thing you're dissing? You know that dual channel is very close to tri-channel in perf. don't you ? Could you list the real world apps that will take advantage of 8 threads and four cores ? A lot of people including myself would find it interesting.......
 
FragMagnet said:
Didn't realise that the only results that are allowed to be posted in this forum are the ones that conform to your vision of computing ? There are a lot of enjoyable aspects to this hobby, if you've limited yourself to one, well that's your choice. I may not do the 3dmark, or highest post as possible anymore, but I understand the challenge and fun of it. Since you understand these i7's so well, then you know there is no real world app that will take advantage of 3 channel over 2 channel mem, unless you're talking about synthetics, the exact thing you're dissing? You know that dual channel is very close to tri-channel in perf. don't you ? Could you list the real world apps that will take advantage of 8 threads and four cores ? A lot of people including myself would find it interesting.......
Click to expand...

You should google "encoding"...
 
FragMagnet said:
Didn't realise that the only results that are allowed to be posted in this forum are the ones that conform to your vision of computing ? There are a lot of enjoyable aspects to this hobby, if you've limited yourself to one, well that's your choice. I may not do the 3dmark, or highest post as possible anymore, but I understand the challenge and fun of it. Since you understand these i7's so well, then you know there is no real world app that will take advantage of 3 channel over 2 channel mem, unless you're talking about synthetics, the exact thing you're dissing? You know that dual channel is very close to tri-channel in perf. don't you ? Could you list the real world apps that will take advantage of 8 threads and four cores ? A lot of people including myself would find it interesting.......
Click to expand...


You've got an excellent point-- so why even bother with a multi-core chip??
 
Atech said:
Which goes to show how useless SuperPi is.
It's like 3Dmark...useless for real world usage.
No HT and only dualchannel ram...a nootered i7...would you run your system like that for real world apps and games?
Click to expand...

not useless if that is your goal..

my goal was to find the highest clock i can pass super pi 32m at with the best efficiency in 32m pi times as possible..

that was the point of the exercise and that pi efficiency could only be achieved with 10x memory multiplier and only memory i have on hand that can do DDR3-2200mhz super pi 32m stable was dual channel kit (as i mentioned in first post already).
 
old skool said:
You've got an excellent point-- so why even bother with a multi-core chip??
Click to expand...
For me, I had been on a laptop for a year, so I was starting from scratch. Saving $150-$200 on a $1700 build didn't make sense, so that ruled out the E8400 & Q6600, the faster 4 cores were the same price as an i7-920. Eventualy you will start seeing more single apps using more cores/threads, and until then there's multitasking...
Nero 7 loads all four cores@ 55%-70% @4Ghz when converting an AVI to DVD, so the total is around 20 mins , on the gf's P4 2.8c it's over 90 mins w HT, and task manager shows the actual core and HT at 100%.
 
Some 3Dmark/PCmark Benchmarks still on air cooling :)

System specs
  • Intel Core i7 920 3836A756
  • Thermalright Ultra 120 Extreme + LGA1366 Bolt Thru kit + 2x 120x38mm Scythe UltraKaze 2000rpm 87cfm fans in push/pull
  • DFI LP UT X58-T3EH8 R.A51 - initial first release 12/18 bios
  • HIS HD4870x2 stock hsf @840/950 - CAT 8.12 (XP SP2) / CAT 8.11 Hotfix (Vista)
  • 2x1GB Cellshock PC3-14400 (Micron D9GTR) + 1GB OCZ PC3-14400 Platinum (Micron D9GTR)
  • Ram cooling: 3x 60x25mm Sunon 23.5cfm Maglev fans
  • 750GB Samsung HD753LJ
  • 4x32GB OCZ Core V1 SSD Raid 0 + Highpoint RR3520LF PCI-E Raid controller 256MB Cache
  • Pioneer DVD-RW
  • 1KW Corsair HX1000 psu
  • WinXP Pro SP3 nLite fully updated / Vista Ultimate SP2 Beta 64bit vLite'd

All personal best single video card results (besides 3dmark2003) :D

3dmark Vantage = TBD
3dmark06 = 27,751
3dmark05 = 36,324
3dmark2003 = 87,280
PCmark05 = 20,977
PCmark Vantage = 8,634

3dmark06_840-950_27751_tn.png


3dmark05_840-950_36324.png


3dmark2003_840-950_87280.png


pcmark05_840_950_20977.png


Here's the max wPrime v1.55 32M I can do right now @4518Mhz

wprime155_5s818ms.png
 
prime95 with HT enabled
- 3.8ghz at 1.232v air cooled 24/7
- 4.0ghz at 1.328v air cooled for 30min limited by heat/air cooling
 
I guess if you wanted to remove more heat, depending on where you are, you could always pipe in cold air from outside into the work area... And it would still be air cooling
 
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