RC5 CPU COW POWER

[cwizard]

For those of you that want to get the maximum processing power going, I want to share the block output of the various Intel processsors.

This is if the processors are run 24/7 only processing RC5 blocks and using the .432 client:

200MHz - .33 MKs/s
233MHz - .49 - .501 MKs/s
266MHz - .76 MKs/s
333MHz o/c 500MHz - 1.39 MKs/s
366MHz - .98 MKs/s
433MHz o/c 488Mhz - 1.35 MKs/s
450MHz - 1.25 MKs/s
466MHz - 1.27 MKs/s
466MHz oc/ 522MHz 1.47 MKs/s

Your block output will be approximately 300 multiplied by the MKs/s. This is only if the machine runs 24/7 and only runs RC5 client. The client gives an average processing rate that goes down from the above figures if you do other things with the machine.

The thing to notice is that two 233MHz do not have the output of one 466MHz. Instead it is more like a 366 MHz.

The faster your processor and the less it works on other tasks, the more blocks it will process. A dual machine is two machines in one and will process twice as many blocks for the same processor speed.

Slow machines do add up over time but it probably isn't worth the electricity to run anything less than a 200MHz Pentium.

Happy Cracking.

PS. I did forget about the Pentium Pro since it's been a while since I've run one for the contest. The 200MHz/512 PPro is .568 MKs/s

[This message has been edited by cwizard (edited 10-03-99).]

[This message has been edited by cwizard (edited 10-04-99).]

[Sterling_Aug]

I have a Pentium Pro 200/512k overclocked to 233 MHz and the processing speed is about .649 MkkKs/sec.

[socalgal]

I have a PIII 450 @527mhz, running approx. 13 hrs/day, and using RC5DES v2.7112.444.

There is a benchmark option for:
RC5 short block
RC5 long block
DES short block
DES long block

Using this info, how can I best determine my processing speed?

[img]/forum/smile.gif[/img]


[This message has been edited by socalgal (edited 10-03-99).]

[cwizard]

The two DES are for a different encryption scheme and not applicable.

The RC5 short block is the ^28 units that D.Net posts as countable blocks. The RC5 long block is for the bigger ^31 size blocks that the client can process. It is still converted to ^28 size by D.Net.

SO, the RC5 short block will tell you your processing power.

[socalgal]

Thanks yet again, cwizard! [img]/forum/smile.gif[/img]

[Joel Kleppinger]

Well, actually the short benchmark is 2^20 and the long is 2^23 keys, or 8 times longer than the short one (2^3). The first one copied is short and the second is long.


[Oct 04 06:24:03 UTC] Benchmarking RC5 with 1*2^20 tests (1048576 keys):
[Oct 04 06:24:03 UTC] Completed in 0.00:00:00.82 [1,278,751.21 keys/sec]
[Oct 04 06:24:03 UTC] The preferred RC5 blocksize for this machine should be set to 31 (8*2^28 keys). At the benchmarked keyrate (ie, under ideal conditions) each processor would finish a block of that size in approximately 0.00:27:59.36. Your buffer thresholds should be set to 154 blocks, enough for approximately 3 days.
.....10%.....20%.....30%.....40%.....50%.....60%.. ...70%.....

[Oct 04 06:24:16 UTC] Benchmarking RC5 with 1*2^23 tests (8388608 keys):
[Oct 04 06:24:16 UTC] Completed in 0.00:00:06.37 [1,316,892.93 keys/sec]
[Oct 04 06:24:16 UTC] The preferred RC5 blocksize for this machine should be set to 31 (8*2^28 keys). At the benchmarked keyrate (ie, under ideal conditions) each processor would finish a block of that size in approximately 0.00:27:10.72. Your buffer thresholds should be set to 159 blocks, enough for approximately 3 days.

[AuraEdge]

The oh-so popular Cel 366@550 can do 1,664 KKeys/s (at least mine does)

[cwizard]

That's great for the 366 oc. I haven't been able to get one to run that fast.

[Dash]

Hi I've been doing RC5 for a while on my pidly K6-2 300 -> 400, but i Never found some stuff out

On the Rc5 stats page, it says i do around 112kkeys a second, but my client usually says 500-700?? Which one do I put in the computer database??

Also what exactly is DES!?!

[cwizard]

DES is the government approved encryption standard that is ancient and a joke in modern terms.

The figure that you want to put into the database is the potential of your system at 24/7. So, just look at the keys/s that it takes to complete a block and put that in there. I was running a K6-2 350 and it did about .568MKs/s so the range you gave is about what you should be posting.