Author: Uri Blass
Date: 04:59:02 08/20/04
Go up one level in this thread
On August 20, 2004 at 06:04:09, Uri Blass wrote: >On August 20, 2004 at 04:39:10, Tom Kerrigan wrote: > >>On August 20, 2004 at 00:52:19, Dann Corbit wrote: >> >>>On August 20, 2004 at 00:29:26, Stuart Cracraft wrote: >>> >>>>Hi, >>>> >>>>I've got an old Pentium 3 @ 1ghz and want to get >>>>something faster that will be good for chess. >>>> >>>>How do today's Intel and AMD chips stack up >>>>compared to the above. 3x? 4x? 10x? >>> >>>2.2 GHz AMD 64 bit should be about 3x that fast. >> >>While that may be true for floating point and vector dependent programs, I'd be >>surprised if it's the case for chess programs. From what I've observed, the P3 >>is rougly equivalent to any Athlon in terms of performance/MHz. The P4 is >>slower. >> >>-Tom > >I use AMD 1 ghz and Athlon64 3000 that is 2ghz for chess programs. >Based on my experience the athlon64 2ghz is nearly 3 times faster for movei(I do >not remember exact numbers at this moment) > >I also get more than 2 times speed improvement for other programs. >I will check later exact speed difference to give better results. > >The AMD 1 ghz is only slightly faster than previous pentiumIII 800Mhz and >PIII850 mhz that I used and it seems to me that there is no big difference >between AMD 1 ghz and pentium1 ghz. > >Uri Here is some comparison with movei analysis of the opening position between 2 ghz and 1 ghz I used 64 mbytes for the search in both systems 2 ghz depth=13 +0.25 e2e4 e7e5 b1c3 b8c6 g1f3 g8f6 f1b5 f8b4 d1e2 d8e7 b5c4 e8g8 e1g1 Nodes: 50584642 NPS: 544564 Time: 00:01:32.89 Movei needs 4:21.83 to produce the same analysis on A1000mhz. it is 261.83/92.89 faster that is slightly more tan 2.8 speed improvement. Fritz even earns more from the new hardware New game - Yace 0.99.87 rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1 Analysis by Fritz 8: 1.e4 d5 2.exd5 Qxd5 3.Nc3 Qd7 4.Nf3 Nf6 = (0.09) Depth: 7/20 00:00:00 29kN 1.e4 Nf6 2.e5 Nd5 3.Nc3 Nb4 4.a3 N4c6 = (0.16) Depth: 8/23 00:00:00 92kN 1.e4 Nc6 2.Nf3 d5 3.exd5 Qxd5 4.Nc3 Qd7 5.d4 Nf6 = (0.06) Depth: 9/26 00:00:00 212kN 1.Nf3! = (0.09) Depth: 9/26 00:00:00 217kN 1.Nf3 Nf6 2.d4 d5 3.Bf4 Nh5 4.Bg5 h6 5.Bd2 = (0.06) Depth: 10/26 00:00:00 306kN 1.e4! = (0.09) Depth: 10/30 00:00:00 446kN 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 Nc6 5.Bb5 = (0.19) Depth: 10/30 00:00:00 694kN 1.e4 d5 2.exd5 Qxd5 3.Nc3 Qd6 4.Nf3 Nf6 5.d4 Bg4 6.Bb5+ c6 7.Be2 = (0.19) Depth: 11/32 00:00:02 2247kN 1.e4 Nc6 2.Nf3 e5 3.Bc4 Bc5 4.d4 exd4 5.Ng5 d5 6.Bxd5 Ne5 = (0.16) Depth: 12/36 00:00:04 5361kN 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.dxe5 Bb4+ 6.c3 Bc5 = (0.22) Depth: 13/40 00:00:12 14018kN 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7 6.0-0 Qf6 7.Bb5 c6 = (0.19) Depth: 14/42 00:00:25 28647kN 1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.Nxe5 Nd7 6.0-0 Nxe5 7.dxe5 Qh4 = (0.16) Depth: 15/40 00:00:59 68219kN (, MyTown 20.08.2004) Fritz on the old hardware needed 38 seconds to get depth 13 76 seconds to get depth 14 and 178 seconds to get depth 15 with same number of nodes. 2ghz on athlon64 2ghz seems to be about 3 times faster than1 ghz on every machine for chess programs. Note that I verified that it is only 2 ghz against 1 ghz by looking at the details(they say 2.01 ghz but this difference is not very importance) I chose with the mouse: start->setting->control panel->system Here are the details that I got: 1)I can see for the new computer computer Athlon(tm) 64 processor 3000+ 2.01ghz 1 ghz of RAM 2)I can see for the old computer: AMD Duron(tm) Processor AT/AT compatible 187,888 KB RAM I understand that tm means thousand mhz that is 1 ghz. Based on this comparison it seems that 2 ghz is about 3 times faster than 1 ghz for chess programs(I do not know the reason and it may be because of other components that are important that are not more mhz when they are not in the old computers) and the fact that PIV has another handicap is not relevant(I used in the chess world computer championship PIV with 2.8 ghz and it was clearly slower than the 2 ghz of the athlon that I use(I think nearly 1.5 times slower but I did not claulcate exact numbers). Uri
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