# Help needed: Ampere 128 core vs Ampere 96 core; Jeff Geerling Performance Testing

**URL:** <https://community.amperecomputing.com/t/help-needed-ampere-128-core-vs-ampere-96-core-jeff-geerling-performance-testing/468>\
**Category:** General Discussion\
**Created:** [September 20, 2023, 7:11pm UTC](https://community.amperecomputing.com/t/help-needed-ampere-128-core-vs-ampere-96-core-jeff-geerling-performance-testing/468 "2023-09-20T19:11:40Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Aaron](https://yyz1.discourse-cdn.com/flex027/user_avatar/community.amperecomputing.com/aaron/32/37_2.png) [@Aaron](https://community.amperecomputing.com/u/Aaron)\
**Post date:** [September 20, 2023, 7:11pm UTC](https://community.amperecomputing.com/t/help-needed-ampere-128-core-vs-ampere-96-core-jeff-geerling-performance-testing/468/1 "2023-09-20T19:11:40Z")

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Wondering if someone in the community might know the answer to this or know someone with an answer.

From @geerlingguy [github issue](https://github.com/AmpereComputing/HPL-on-Ampere-Altra/issues/11):

> I’ve bumped Ps/Qs, and tweaked Ns a bit, but for some reason on my system, I can’t get the M128-28 CPU I swapped in to get any higher number than my M96-28 CPU…  
> I have kept everything else in the system identical (same Samsung 96 GB RAM, no additional PCIe cards, same USB network adapter plugged in, using VGA monitor output), but with the M128-28 CPU, I changed HPL.dat to use:
> 
> ```auto
> N: 100000
> NB: 256
> P: 8
> Q: 16
> 
> ```
> 
> That resulted in `1118.5 Gflops`, nearly identical to the 96-core result. I installed `lm-sensors` and ran `watch sensors`, and the SoC temp never rose above 65-67°C. CPU power hovered around 125-130W, and never went any higher. Checking `cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_cur_freq`, almost all cores were locked at `2800000`, but maybe 10-15 would go up and down."

GitHub Issue Link: [M128-28 not getting better scores than M96-28 · Issue #11 · AmpereComputing/HPL-on-Ampere-Altra · GitHub](https://github.com/AmpereComputing/HPL-on-Ampere-Altra/issues/11)

@avladu @bexcran @Manawyrm @q66 @pzc @hrw or anyone else?

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**Author:** ![hrw](https://yyz1.discourse-cdn.com/flex027/user_avatar/community.amperecomputing.com/hrw/32/31_2.png) [@hrw](https://community.amperecomputing.com/u/hrw)\
**Post date:** [September 20, 2023, 7:24pm UTC](https://community.amperecomputing.com/t/help-needed-ampere-128-core-vs-ampere-96-core-jeff-geerling-performance-testing/468/2 "2023-09-20T19:24:41Z")

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No idea. Never used Ampere system.