First post, by theelf
- Rank
- Oldbie
Hi, this days i read a lot of inaccurate information about how to slowdown a Pentium 2+ computers using Throttle
My computers is a Pentium 3 socket 370 1GHZ, board DFI CA61 VIA 596B. Before build this computer i have a katmai 650, a Pentium 2 450, and a mendocino 366, all with similar results, just one thing, all NON Via chipsets have 8 levels of slowdown, VIA 16 levels, is much better, but not a big problem, even the mendocino with intel board that was not very good, i can slowdown to XT levels
I test with 3dbench and topbench, i use setmul to make L1/L2 cache off, and throttle http://www.oldskool.org/pc/throttle/DOS
here all results, i compare with the ones in this post 3DBENCH CPU Benchmark Database
3DBench (1c, for low speeds 1.0)
P3 1GHZ all cache ON no throttle fullspeed 512,2
Cache L1 OFF 6,5 - If i compare with results from low end 386 is similar
Cache L2 OFF L1 ON 434,3
Cache L1/L2 ON (top speed)
Throttle 1 478,5
Throttle 2 444,4
Throttle 3 410,6
Throttle 4 376,7
Throttle 5 342,8
Throttle 6 309
Throttle 7 275
Throttle 8 241,3
Throttle 9 207,3
Throttle A 173,4
Throttle B 153,8
Throttle C 120
Throttle D 86,1 - 5x86 levels
Throttle E 48,2 - DX2 levels
Throttle F 18,4 - Slow 486 levels like DX33
Cache L1 ON L2 OFF (cache 1 on cache l2 off make computer more or less 20% slower)
Throttle 1 405,7
Throttle 2 376,7
Throttle 3 348
Throttle 4 319,1
Throttle 5 290,3
Throttle 6 261,7
Throttle 7 232,8
Throttle 8 203,8
Throttle 9 175,1
Throttle A 146,6
Throttle B 121,6
Throttle C 89,1
Throttle D 65,7
Throttle E 44
Throttle F 15,4 - similar to SX25
L1/2 Cache OFF
Throttle 1 5.9 - This is similar to my 286 16mhz
Throttle 2 5.2
With Cache off throttle from 3 and up make too slow for 3dbench, i decide to check topbench https://dosbenchmark.wordpress.com/
TOPBENCH
Cache OFF - 61 386SX33/DX20
Cache OFF Throttle 9 - 16 286 6mhz
Cache OFF Throttle D - 6 NEC V20 7mhz
Cache OFF Throttle E - 4 8088 4.77mhz
Of course this are benchmaks, but i tested with real work games and software, for example Zaxxon works OK in Cache OFF Throttle E, but works great in Throttle D, similar to my real XT turbo and too fast in Throttle C and up, like old hardware
I hope this benchmark help people to have right information about slowdown a Pentium2+ computer and how effective is. IS easy to reach XT, 286, 386 and 486 levels without much effort, just some batch files in problematic software
I tested some of results with Doom, and timedemo results are consistent with results from 3dbench, then i decide no continue more testings
