Finally playing with phase change for intel cpus
System:
- Intel Core 2 Duo E6700 QPGA B1 Step 5
- Kayl Black Frozen SS 1/4HP
- Asus P5W DH Deluxe 0801 bios
- 128MB Gainward FX5200 PCI card
- 2x1GB Gskill PC6400PHU2 2GBHZ Micron D9 (cooled by 120x25mm Thermaltake 81cfm fan)
- 74GB WD Raptor 8MB cache
- Pioneer DVD-RW
- FDD
- 700W OCZ GameXStream Psu
I spent all the time doing up my insulation around cpu socket and then I realised i forgot to install the 4x mounting threads for the evap through the motherboard LOL
Had to remove all the insulation and mount the threads and then put the insulation back on hehe.
As you can see from pics here http://i4memory.com/phasechange/kayl...on/p5wdh/html/, I still need to reinstall the Radiical chipset waterblock on MCH/NB etc so more to do for tomorrow
Performix Red LET
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First top layer of insulation & dielectric grease in cpu socket only
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Second top layer of insulation using thin sticky back foam (Aerotape) - whoops forgot to mount the threads to the board :o
Removed insulation, mounted threads and reinstalled insulation
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First dry test mount - see gaps in middle pic below what should i fill it in with or do i need to ?
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Interesting when setting up my phase change gear and transporting the chipset cooling loop over to the new position, I noticed the MCP350 pump outlet barb tubing had been kinked for a while now as you can see the tubing near the outlet barb had memory effect of a collapsed tubing... maybe this is a possible reason why i didn't gain much in max fsb on water cooled chipset ?? Seems now that i have fixed the kink, FSB scales better with vMCH but could this be due to phase change on cpu or both the unkinking of tube + phase change gave me better FSB scaling with vMCH ?
Very quick windows, Systool dual 32M PI (cpu benchmark) tests gave me:
10x multipler
4240mhz at 1.6v with 1.65v vMCH
4330mhz at 1.65v with 1.65v vMCH
9x multipler to test max FSB
1.75v vMCH gives me 452fsb max which is already 3fsb higher than my 1.85v vMCH before (due to tube kinking ?)
Since it could pass Systool dual 32M Pi test, it should be able to pass Super Pi 32M too
@9x452fsb
@10x424fsb
These are untweaked runs just to test limits of cpu on phase change cooling. Working on >4.3ghz right now seems to a tad flaky at 4360mhz at 1.65v. Seems i messed around with the mounting pressure too much and the max clock varies now a bit - so looks like I might need to remount a bit later but for now seems around 4300mhz at 1.65-1.675v is where I am at
Evap temps
@idle = -34C to -36C
@load = -32C to -34C
Let's start with 10x430fsb = 4300Mhz at 1.675v (result of bad mount pressure - loosened wing nuts and dropped from 4350mhz at 1.65v stable to this heh)
Not bad, but of course memory using upclock divider will have a much faster time
Max 1M so far still in same windows session as 4300mhz at 1.675v. Used clockgen to clock to 4524mhz - 10x452fsb
Now if ignore what Systool dual 32M Pi says my max is (4300mhz), and just run single 32M I can hit 4403mhz at 1.675v bios set
Just shy of <12min time
Bump vMCH from 1.75v to 1.85v in bios and can do 1M @4605mhz at 1.675v bios set vcore
11 seconds flat
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go and by a solder iron , follow the instructions of P5WDH mod,











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