I'll be getting my Vapochill LS next week :)

[bobsmith1492]

You can get those flat whatchamacallums... peltiers from dangerden for only like $38. Just add on a nice watercooling or fan and you're all set! Oh, and a powersupply would be nice too, but those are easy to make.

 

[pelikan]

I'm really looking forward to your impressions on phase change and your overclocking results.

 

[Corporate Thug]

how often do you have to refill/repump the coolant???

 

[Jeff7181]

Originally posted by: shady06
how often do you have to refill/repump the coolant???

As often as you "refill/repump the coolant" in your refrigerator.

 

[Zebo]

Has anyone ever done a study of temp/clock?

I posit the phase change is the biggest waste of money since the "Carlton Sheets no Down Real-estate deals"

 

[Jeff7181]

Originally posted by: Zebo
Has anyone ever done a study of temp/clock?

I posit the phase change is the biggest waste of money since the "Carlton Sheets no Down Real-estate deals"

No one said it was cost effective... but if you're asking if lower temps will equate to higher clock speeds, the answer is yes, they will, but individual results will vary. For example, not EVERY FX53 will do exactly what SilverBack's does.

By the way SilverBack... where the hell are your benchmarks at 2.77 GHz?

 

[Zebo]

Ya I'd just like to know by how much lower temps will equate to higher clcoks. I did'nt see but about 100Mhz diff going to h20, and my setup is highly expensive. Phase on the other hand, lowers it below freezing and I'd like to see what kind of relationship to clcok is brought about by it. Either setup it's not "worth" it as we noted but ther has to be some data somewhere which relates temps/clock just to predict what kind of results one could expect.

 

[pelikan]

Here's a quote from hitechjb1 of Overclockers Forums:

"As a rule of thumb I use, every 10 C lower in temperature, the CPU can be clocked stably higher by about 4%. Mathematically, df/f = - 0.04 dT, where f is frequency and T is temperature.

So say, if 2.6 GHz is the norm for mobile Barton on air at 45 C,
45 C would be 2.6 GHz
35 C would be 2.7 GHz
25 C would be 2.81 GHz
15 C would be 2.92 GHz
5 C would be 3.04 GHz
-5 C would be 3.16 GHz
....

If a chip happens to be slower, say getting 2.5 GHz at 45 C (on air),
then subtract 100 MHz in each of the above numbers correspondingly."

 

[Ackmed]

Originally posted by: SilverBack
TomsHardware did a piece on the FX at 2.9 and a P4 at 4 GHz.
Both do extremely well as you might expect.
The FX has the edge in the finish however, but it's close.

THG couldn't get thier chip to 3 Ghz. It wouldn't remain stable.
I'm hoping that because mine will do 2700 on water that I may have a better performing chip.
Time will tell.
Anyway I get it next Friday.

I went from a P4 3.5GHz to the FX53 at 2700. By far the FX is the faster system.

I just went from a 3.0c@4gig on a Mach II, to a A64 3400+ @2.7gig on water, and my A64 is faster in games for me. Which is all I care about. I came VERY close to getting a FX as well. I had a guy offer me a FX-1+Asus SK8V+1gig XMS 3200 ECC ram, for my 1gig PC4000 HyperX and $580. I was - close to doing it. But he was in Canada and I didnt want to hassle with customs... So I just got a $77 GF3 250 mobo, and a A64 3400+.

And whomever said Vapor isnt safe to run 24/7, if properly setup, it is. I did for 6 months, and it was fine.

 

[Zebo]

Originally posted by: pelikan
Here's a quote from hitechjb1 of Overclockers Forums:

"As a rule of thumb I use, every 10 C lower in temperature, the CPU can be clocked stably higher by about 4%. Mathematically, df/f = - 0.04 dT, where f is frequency and T is temperature.

So say, if 2.6 GHz is the norm for mobile Barton on air at 45 C,
45 C would be 2.6 GHz
35 C would be 2.7 GHz
25 C would be 2.81 GHz
15 C would be 2.92 GHz
5 C would be 3.04 GHz
-5 C would be 3.16 GHz
....

If a chip happens to be slower, say getting 2.5 GHz at 45 C (on air),
then subtract 100 MHz in each of the above numbers correspondingly."

Good info thanks Pelikan. Link did'nt work but still nice to see someone has done some work in this area.

 

[SilverBack]

I'll post a couple here in a few

3D Mark 2001 27k+

I don't if any of you guys have ever done PcPitStop tests, but here is mine

Look for Ed Downing

Aquamark3 65K+

SuperPi 1m 32 seconds

Currently at PCPitstop my system is beating P4's at 4.2 GHz.
At 3GHz I think the FX will be at or near a 5000+ rating

 

[Acanthus]

I know for sure Prometia Mach II can go a lot cooler than -5c @ load.

More like -25c.

I have no idea what the compressors strength is in the new Vapo design though.

 

[Ackmed]

I was at -33c full load with a Mach II. Idle was around -45c.

 

[Acanthus]

Originally posted by: Ackmed
I was at -33c full load with a Mach II. Idle was around -45c.

What cpu?