Full Version: New overclocking record!!!
| QUOTE (Tom's Hardware) |
| We set our sights pretty high for this test: the THG team set out to squeeze at least 5 GHz from the selected Intel P4. In the run-up we tested 10 different P4 CPUs for their overclocking potential. We also used a painstakingly modified Asus motherboard (P4C800-E) that featured a four-phase voltage regulator to allow for extreme voltages. The serial product only has a three-phase regulator. Nonetheless, almost 90 amperes are possible at top load, according to the VRM specs. When seriously overclocking the CPU, we recorded a current of 96 amperes, which even stretched the potential of the modified voltage regulator on the Asus P4C800-E. Finally, by gradually increasing FSB speed from 200 MHz (factory setting) to 309 MHz, we achieved a record speed of 5255 MHz. The fixed multiplier caused problems on all of the P4 CPUs we examined: it could be adjusted within a range between 2.0 and 17.0. That meant that from the outset synchronous operation of FSB and memory speed was not an option. When all's said and done, there is no DDR memory around that can be operated at 309 MHz. As a result of the 3:2 split (FSB to memory), we were able to reduce memory speed to 206 MHz. This meant Corsair's two DDR550 modules had enough air - previously we recorded the maximum possible clock rate at 285 MHz (CL3 mode). As a point of comparison: synchronous operation at 285 MHz would result in a CPU clock rate of 4875 MHz - not enough for our needs by far. That said, we were also forced to recognize that memory performance in asynchronous mode sank by around 15 percent against synchronous operation. It just shows that you can't rely just on the processor clock rate for getting the most out of your system. At full load, taking into account a maximum CPU heat dissipation of just under 175 watts, we recorded a temperature of approx. -190°C on the CPU cooling head. A record score that has yet to be beaten by any vaporizer system. |
For more info : The 5GHz Project
They also taped the whole thing, so here's the video :
Mirror 1
Mirror 2
Jinx had the video about a week ago, and I watched it a few days back. That guy used ALOT of liquid nitrogen to cool that system....
This is one of those things where you say "hey look what I did" and then undo it because it is so inefficient.
wow, what an OC...i remember seeing awhile back the same guy used liquid nitroigen to go from 1.4 to 3.2 with the early P4's
I saw that too, Kwiky. That guy used liquid nitrogen as well.
| QUOTE (bangbang023) |
| This is one of those things where you say "hey look what I did" and then undo it because it is so inefficient. |
Why is it so inefficient? The system was still stable at 4700MHz. That's not nothing:) I guess that would be pretty useful in huge computations and that kind of stuff.
cooooooooooool....... man, I wish I could be bothered watch the video.... *kicks 56k*
| QUOTE (Rezza @ Jan 2 2004, 12:36 AM) |
| cooooooooooool....... |
Not only cool, but frozen : -190 degrees celcius
But anyway, I always thought that electronics were sensitive to extreme temperatures, either high or low. I'd say chips would just break in such a cold. Apparently not, but still...
Actually, the colder the chip, the better it runs. I don't know why, but it does. But, extreme heat will damge most chips.
| QUOTE (psYchotic @ Jan 1 2004, 07:22 PM) | ||
Why is it so inefficient? The system was still stable at 4700MHz. That's not nothing:) I guess that would be pretty useful in huge computations and that kind of stuff. |
Do you know how much it's going to cost to keep that thing cooled? Liquid Nitrogen isn't exactly as easy or cheap to buy as a Big Mac.
Liquid Nitrogen, even in small amounts, I believe to be expensive. Unless there is another way to cool down a chip alot other than that... it'll be WAY to expensive to run that fast. Give it another 6 months and the industry will surpass 4.0Ghz 
| QUOTE (GTX5_Crusader @ Jan 1 2004, 09:37 PM) |
| Liquid Nitrogen, even in small amounts, I believe to be expensive. Unless there is another way to cool down a chip alot other than that... it'll be WAY to expensive to run that fast. Give it another 6 months and the industry will surpass 4.0Ghz |
That's it basically. Hell, it owuld be even cheaper and more efficient to just run a cluster.
That's astounding but I would definitely tend to agree with gtx. I found liquid Nitrogen to be about $90/20mL at one site. 
It's very impressive but, as gtx says, I'm sure they'll hit 5 GHz in the next 9 months or so.
It's very impressive but, as gtx says, I'm sure they'll hit 5 GHz in the next 9 months or so.
$90/20ml?! Geez, that's cheaper than I thought... but still expensive
heh you'd go through that in about 2 seconds. It definately adds up. Besides if you spill a little of that in the wrong place.... bye bye whatever it hits.
Instant freeze...
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