Probably a lot of you are interested in what PC's I used to crunch for the gauntlet. Well: here are a few of my PC's
Let's start with an overview (click on the images for a larger view):
On the top shelf on the right, you can see a dual xeon L5320:
I have this one already for quite some time. It's pinmodded to run at 2.33GHz, in stead of 1.86GHz. As this is a low-power xeon, it has a TDP of 50W, so I've got 8x2.33GHz power for about 100W. This systemis powered by a 550W powersupply, but as you can see on the little meter above it: it uses about 150W. The output of this machine? A RAC of about 2700. Pretty efficient crunching power I'd say.
As this is my xeon-overclock an benchmarking-board, this system will go down after the gauntlet to play with some new xeons
Underneath the dualL5320, there's this AMD-machine:
This machine is my dual opteron 2220SE. Using two dualcore opterons, and overclocking the FSB from 200 to 209.5, this machine gives 4x2.93GHz crunching power. These CPUs get pretty hot: most hot air of all machines comes from this one. This can be explained by the fact it has SE-opterons, which have a TDP of 120W. I hope to put (eventually) quadcore-opterons on this board.
This machine has a RAC of about 2100. That's below my expectations, especially compared to the octacore above it. I'm probably going to turn it off after the gauntlet.
Underneath that dual opteron, you can already spot a piece of the next machine:
This is probably the least exotic hardware: a single Intel Core2Quad Q6600, clocked to 3.33GHz. This machine gives me the most credits of all: a RAC of about 3600. Furthermore it's quite silent, so I guess this one will stay a bit longer, untill I need the board for benching... I clocked it to 3.33GHz in about an hour, so I guess it has more potential.
Next to the Q6600 is another AMD-machine:
It has the same motherboard as the dual 2220SE, but other cpu's: two Opteron 8214's. Those are overclocked from 2.2 to 2.3GHz, and handicapped by the fact only one CPU has RAM. The other CPU has to access the memory through the first CPU... Result: a RAC of about 1300.
This setup will be benched, and shortly after it, the motherboard and CPUs will be sold.
Above the Dual 8214, is another Intel-machine:
This motherboard has two Intel Xeon 5160s on board, running at the stock 3GHz. This setup hasn't been crunching much: I used the stock Intel heatsinks (1U passive / 2U active) on it, and despite all fan-control in the BIOS, those coolers were very noisy. I plan to sell the CPUs, but I'm probably going to keep this board to use with quadcore xeons, and 2U passive or other quiet cooling.
On the bottom-right of the picture (and the only system inside a case), you can find the watercooled dual opteron 270 I alreay presented in http://www.boinc.be/vbulletin/showth...?t=2053&page=3
That machine has two dualcore low-power opteron 270's, running at 2.4GHz in stead of 2GHz, giving a RAC of about 1300.
On top of the table you can see my new benchmarking-toy. I hope to publish results of it soon.
Together with some PC's that are used to work on except for just crunching, they give this result:
About 215000 credits during the gauntlet.
I guess it's needless to say all these computers are crunching with the approval of the owner (me), and they are not part of a company's datacenter...