View Full Version : Benchmarks

August 24th, 2006, 01:22 PM
I've been running a version of CheckIt to test out my 5150 Vs. 5160 to see what differences are. By and large they are identical, except a couple of things; the hard disks and CGA cards. Both have a 8087 FPU.

IBM CGA in XT: 637 characters/second
Hercules CGA in 5150: 520 characters/second
IBM Monochrome card: 710 characters/second

5150: 344 Dhrystones
XT: 344 Dhrystones

5150: 115.6 Whetstones
XT: 115.6 Whetstones

The other comparison is the XT's 20MB Western Digital WD25 hard drive Vs. the 5150's 10MB Seagate ST412.

Average seek time:
XT: 80.3ms
5150: 89.9ms

Track to Track seek time:
XT: 17.5ms
5150: 16.3ms

Transfer speed:
XT: 88.4K/second
5150: 75.5K/second

It's a pity I don't have memory benchmarks, it would be interesting to see how the XT's 640kB (all on the mainboard) Vs. the 5150 (256kB on the mainboard, 384kB on an expansion card).

I'll TRY to run the tests on my other 5150 and get some speeds for the mono display :)

Useless info, but hey, I thought I would post :p

August 24th, 2006, 01:43 PM
Memory speed will be the same, even though one machine has it all on the motherboard and one has it in expansion memory. There was no concept of 'local bus' for memory back then.

August 24th, 2006, 06:45 PM
Hmm...interesting thought...I wonder if the IBM emulation on the Dimension 68000 will run PC-Probe? Guess I'll just have to give it a try.


August 26th, 2006, 01:33 AM
I just checked how powerful is math co-processor.

Without 8087 Amstrad PC1640 (8 MHz 8086) have math speed of 15.9K Whetstones.
And after adding 8087 woring in frequency 8 MHz it had math speed of 250K Whetstones.

And benchmarks on my 5160:

CPU speed: 344 Dhrystones;
Video speed: 546 Characters per second (Dongfeng's 637 (!));
Math Speed: 6.6 Whetstones;

August 26th, 2006, 10:35 AM
OK. this is what i've found after running CheckIt on my 80286/10 Mhz... no 80287 :p

CPU speed: 1842 Dhrystones;
Video speed: 3717 Characters per second (MDA)
Math Speed: 37 Whetstones

i'd wanna see other computers benchkmark/results :P

a question... Luke what was your 8086's CPU speed score?? bye!

August 26th, 2006, 11:46 AM
8086 CPU have power of 767 Dhrystones.

pl85, maybe you are from Poland?
I saw *pl* and I imidiately tought, that you might be.


August 26th, 2006, 01:18 PM
That 8087 really makes a difference!

Luke, is your CGA card IBM one with composite input?

August 27th, 2006, 12:40 AM
Yes it's IBM card.


August 27th, 2006, 03:08 AM
I have no idea why. Although I am pretty sure my card is green.

August 27th, 2006, 10:43 AM
pl85, maybe you are from Poland?
I saw *pl* and I imidiately tought, that you might be.


pl are the first letters of my name... and 85 because i was born in that year. :D

September 8th, 2006, 11:23 AM
With an IBM Monochrome card with 5151 display, my 5150 gives 710 characters per second! I'll have to dig out an 8-bit VGA and see what that gives.

Mike Chambers
September 10th, 2006, 08:30 PM
checkit is a pretty neat dos benchmark util... never seen this one before.

i ran it on my 80386 DX/40 and got:

CPU speed: 4250 Dhrystones
Video speed: 2708 CPS (it's an old 8-bit ISA Trident VGA adapter)
Math speed: 82.3K Whetstones

it's showing that my CPU speed is equivalent that of a 386/20, which leads me to believe that i forgot to put a jumper on the turbo switch pins on the motherboard :wow:

glad i ran this program... i'm going to put a jumper on it now, lol