致し方なく、2.2に上げた・・・

9800GTX+のbenchmark。

$ ./dnetc -bench rc5-72

distributed.net client for CUDA 2.2 on Linux Copyright 1997-2009, distributed.net
Please visit http://www.distributed.net/ for up-to-date contest information.
Start the client with '-help' for a list of valid command line options.


dnetc v2.9105-512-CTL-09072609-*dev* for CUDA 2.2 on Linux (Linux 2.6.24-24-generic).
Please provide the *entire* version descriptor when submitting bug reports.
The distributed.net bug report pages are at http://bugs.distributed.net/
Using email address (distributed.net ID) 'sr@hyper.cx'

[Jul 28 02:11:42 UTC] RC5-72: using core #0 (CUDA 1-pipe 64-thd).
[Jul 28 02:12:02 UTC] RC5-72: Benchmark for core #0 (CUDA 1-pipe 64-thd)
                      0.00:00:17.03 [201,474,671 keys/sec]
[Jul 28 02:12:02 UTC] RC5-72: using core #1 (CUDA 1-pipe 128-thd).
[Jul 28 02:12:21 UTC] RC5-72: Benchmark for core #1 (CUDA 1-pipe 128-thd)
                      0.00:00:17.04 [201,445,873 keys/sec]
[Jul 28 02:12:21 UTC] RC5-72: using core #2 (CUDA 1-pipe 256-thd).
[Jul 28 02:12:40 UTC] RC5-72: Benchmark for core #2 (CUDA 1-pipe 256-thd)
                      0.00:00:16.28 [198,185,553 keys/sec]
[Jul 28 02:12:40 UTC] RC5-72: using core #3 (CUDA 2-pipe 64-thd).
[Jul 28 02:12:58 UTC] RC5-72: Benchmark for core #3 (CUDA 2-pipe 64-thd)
                      0.00:00:16.06 [201,172,509 keys/sec]
[Jul 28 02:12:58 UTC] RC5-72: using core #4 (CUDA 2-pipe 128-thd).
[Jul 28 02:13:17 UTC] RC5-72: Benchmark for core #4 (CUDA 2-pipe 128-thd)
                      0.00:00:16.71 [160,712,013 keys/sec]
[Jul 28 02:13:17 UTC] RC5-72: using core #6 (CUDA 4-pipe 64-thd).
[Jul 28 02:13:37 UTC] RC5-72: Benchmark for core #6 (CUDA 4-pipe 64-thd)
                      0.00:00:16.93 [202,844,252 keys/sec]
[Jul 28 02:13:37 UTC] RC5-72: using core #7 (CUDA 4-pipe 128-thd).
[Jul 28 02:13:56 UTC] RC5-72: Benchmark for core #7 (CUDA 4-pipe 128-thd)
                      0.00:00:16.78 [170,555,168 keys/sec]
[Jul 28 02:13:56 UTC] RC5-72: using core #9 (CUDA 1-pipe 64-thd busy wait).
[Jul 28 02:14:15 UTC] RC5-72: Benchmark for core #9 (CUDA 1-pipe 64-thd busy wait)
                      0.00:00:17.03 [201,506,173 keys/sec]
[Jul 28 02:14:15 UTC] RC5-72: using core #10 (CUDA 1-pipe 64-thd sleep 100us).
[Jul 28 02:14:34 UTC] RC5-72: Benchmark for core #10 (CUDA 1-pipe 64-thd sleep 100us)
                      0.00:00:16.06 [201,115,368 keys/sec]
[Jul 28 02:14:34 UTC] RC5-72: using core #11 (CUDA 1-pipe 64-thd sleep dynamic).
[Jul 28 02:14:53 UTC] RC5-72: Benchmark for core #11 (CUDA 1-pipe 64-thd sleep dynamic)
                      0.00:00:17.03 [201,503,478 keys/sec]
[Jul 28 02:14:53 UTC] RC5-72 benchmark summary :
                      Default core : #0 (CUDA 1-pipe 64-thd)
                      Fastest core : #6 (CUDA 4-pipe 64-thd)
[Jul 28 02:14:53 UTC] Core #6 is marginally faster than the default core.
                      Testing variability might lead to pick one or the other.

哀しい・・・