View Full Version : Prommie Mach II GT?
Nate P.
04-12-2008, 10:22 PM
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=230242189946
What do you guys think?
n00b 0f l337
04-12-2008, 10:26 PM
Not worth it, I'd go custom.
Nate P.
04-12-2008, 10:30 PM
Not worth it, I'd go custom.
Why do you say that? Can you get a custom phase for cheaper?
killermiller
04-12-2008, 10:51 PM
Not worth it, I'd go custom.
Go custom from NOL:ROTF:
or Jin :cool: -only cause he is 3000 miles closer
n00b 0f l337
04-12-2008, 11:05 PM
Naw I'd suggest Jinu for him, that side of the country and all.
Custom can be cheaper, but you'll get a lot better performance.
thebanik
04-15-2008, 03:40 AM
hey n00b, u said custom can be cheaper, i wud assume cheaper from u, will one of urs be cheaper as well as hold a QX9650 @ around 5.0Ghz????
tiborrr
04-15-2008, 04:10 AM
thebanik: What a stupid question... Overclock mainly depends on the quality of the yield. Better question would be what temperatures does the unit hold at given heatload.
thebanik
04-15-2008, 04:21 AM
thebanik: What a stupid question... Overclock mainly depends on the quality of the yield. Better question would be what temperatures does the unit hold at given heatload.
oh sorry for the noobish question, basically my chip does around 5.0 Ghz with around 1.75V under LN2, and around 5.4 with 1.9V, i have no idea how much wattage of heat the chip was producing but u being the experts can know roughly that @ that volts how much heat is being generated and then tell me whether the cheaper SS will be able to hold the QX @ that clocks or not with a temperature of even + 10-20C., I know in phase cooling you ppl talk in language like "@ 200 W load how much temp. wud the cooling unit give", but since that was not my primary concern hence i put it in my own noobish langague. :( :shakes:
tiborrr
04-15-2008, 04:43 AM
Sorry for the rough tone in my previous post, but nevertheless - yes, we talk about heatload hold (W = J/s) at given temperature (°C mostly). To answer your question - it mainly depends on the quality of the yield. It may be prime stable at 4600MHz and it may be prime stable at 5200MHz, like my E8500 under my D.I.Y. custom built SS.
Units, built by XS users, are normaly charged with coolants with lower boiling point temperature, hence the better performance. A unit, built by NoL, Jinu, Dimas, tim, Moc, LukeXE, Piotres, Duniek, LittleDevil, ... will typically hold 15-20°C better temperatures on load due to usage of better coolant gases (R404a, R507a, R402a) and better evaporator direct-die cooling heads (Mach's original evaporator isn't made for a very high Q load). All of that by costing even a bit less than you pay for a used Prommie.
If we're already talking about Mach, here's my restauration of an old Moonman's Mach. A lot of work with evaporator housing to fit LGA775. I've removed the original rigid 0.4m flex 8mm suction tubing and replace it with long, 1m flexible rubber tube with stainless steel coil (rated down to -200°C, quite expensive though). I've also grinded off the original colour & rust that occured around the suction (except on the welds on the compressor housing), repainted it, changed oil then rebraze-it shut until assembly. Also gave a touch of cleaning & painting on the condenser.
http://shrani.si/t/E/bR/2NHBcCRS/dsc0015.jpg (http://shrani.si/?E/bR/2NHBcCRS/dsc0015.jpg) http://shrani.si/t/W/Mx/4RP0JDT7/dsc0016.jpg (http://shrani.si/?W/Mx/4RP0JDT7/dsc0016.jpg) http://shrani.si/t/1W/mD/1DMclCoz/dsc0017.jpg (http://shrani.si/?1W/mD/1DMclCoz/dsc0017.jpg) http://shrani.si/t/23/YM/3B7Ln4Vz/dsc0018.jpg (http://shrani.si/?23/YM/3B7Ln4Vz/dsc0018.jpg) http://shrani.si/t/1r/40/3dSxXfv9/dsc0020.jpg (http://shrani.si/?1r/40/3dSxXfv9/dsc0020.jpg) http://shrani.si/t/w/Md/37bOOoZX/dsc0022.jpg (http://shrani.si/?w/Md/37bOOoZX/dsc0022.jpg) http://shrani.si/t/3e/8S/2dR9Mlrd/dsc0021.jpg (http://shrani.si/?3e/8S/2dR9Mlrd/dsc0021.jpg)
Just need to braze five joints and still decide on the lengh of the this 0.8mm (0.031" AFAIK) captube - it's on 2.5m for the moment.
All of this will have to be done on this Prometeia Mach II too in order to achieve the same temperature's that XS builders can get you with their 'cheaper' cooling units - out of the box!
2,5m to 2,3m are good. I would suggest to use an accumulator and solder the captube around it. If you do that, better use 2,5m :) .