The Slowest CPU in the Database: a 10.75 MHz Intel Pentium 1

In the Team Cup 2015 CPU Challenge sub-competition, one of the challenges is to validate the lowest CPU frequency. Trodas from Czech Republic is currently at the top of the leaderboard with a 10.75 MHz Pentium 1. After checking the database, it turns out that is the lowest validated frequency in our database!

With 10.75 MHz, Trodas is 'leading' by 21 MHz over the next contender I.nfraR.ed from Bulgaria. In contrary to I.nfraR.ed, Trodas is using an ancient processor which he underclocked 88%. Percentage-wise, I.nfraR.ed is doing significantly 'better' with a 98% underclock of a Phenom II X4 965 processor. The biggest challenge for Trodas was without any doubt finding the right operating system to pass the CPU-Z validation. It is remarkable to see that a 10.75 MHz Pentium 1 can run Windows XP!

When you're sitting behind your PC, frustrated because it takes a second too long to open a webpage, consider that things can always get slower ...


7

Belgium Massman says:

[hwbot="2987009"]submission[/hwbot]

Kazakhstan TerraRaptor says:

Great job!

Indonesia Lucky_n00b says:

This guy should gets a 'Patience award' or something hahahahah :D :D Keep pushing it!

Ukraine StingerYar says:

Nice! :D

Sweden lanbonden says:

I really like how overkill the cooling is for this kind of submission :D

Czech Republic buildzoid says:

A CPU so slow you could probably run it without a heatsink.

Czech Republic trodas says:

Thank you, guys! I'm a bit surprised that this fun old school draw attention... So it looks like I should have to reduce the clock even futher for a challenge :) Maybe next time I get even lower clock? :) I have ideas and I reasonably believe I can make it work... TerraRaptor -

Great job!
Thank you for your help too...! Lucky_n00b -
This guy should gets a 'Patience award' or something hahahahah :D Keep pushing it!
No kidding... :) It is slow to work at 10.7MHz... but it is possible! :) What kind of 3D bench could run at such machine...? :) stingeryar -
Nice!
Thank you very much! I push harder next time :) I think I can do it... :) lanbonden -
I really like how overkill the cooling is for this kind of submission :D
I *love* overkill :) ... but, on more serious note, I also trying to overclock the P90 as much, as I can (it can do 83x1.5 easily): http://hwbot.org/submission/2978646_ ;) So I just did not removed the cooler... because there is no reason. Both CPU, NB, SB and the Rage XL are very, very cool running. buildzoid -
A CPU so slow you could probably run it without a heatsink.
Yep, it could. But at 125MHz it probably won't run stable w/o cooling ;) And with really GOOD cooling I managed the AMD K5 PR75 to post at 100MHz once, but that it is. It can run at 90MHz well and stable on this mobo: http://hwbot.org/submission/2986787_ ...but I having hard time with the SuperPi 32M, as the HDD operations always cause crash... CPU / memory / GPU is stable, but HDD access not. Or ... not yet, I have to figure it out :)

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