Should I aim stability test for Prime 95 or Cinebench on my 13th gen Core i9?

[ProgUn1corn]

Hi, I'm using i9-13950HX, undervolted first using AC and DC loadline, then throttlestop. I've set my AC and DC loadline to 50 on my MSI laptop and -25mv in throttlestop.

In Cinebench R23 and R15, they are both stable enough that I can get 30min of load without crash, however in Prime 95 it immediately crashed, and this happened 8/10 times.

I've noticed that running Prim 95's small FFT I get significant higher power usage than like Cinebench. I have different profiles that I've set the turbo ratio limits the same, and CPU's clocks are the same, however in Prime 95 it will draw about 10~20w higher power.

I'm not aiming for thermal test, just stability. Also I would like to lower the fan noise, so I've set a relatively low power and temperature target. By default it can boost up to 150~160w and stable at 105w at 95c, I've set it to 125w boost and 85w sustained. The turbo time is just right that at the very end of turbo it touches the limit slightly. So for stability test, which one should I aim for?

 

[80-watt Hamster]

If you're already stable in CB, P95 would seem the logical choice. Have you tried running at 0mV offset? Small FFTs is a pretty brutal workload, and the undervolt might be what's driving the crashes. That'll likely blow past your power and temp targets, but you may not be able to get both P95 stability and your desired temp/noise/power values.

 

[Upgrayedd]

If you're already stable in CB, P95 would seem the logical choice. Have you tried running at 0mV offset? Small FFTs is a pretty brutal workload, and the undervolt might be what's driving the crashes. That'll likely blow past your power and temp targets, but you may not be able to get both P95 stability and your desired temp/noise/power values.

This. Undervolt likely culprit.

But also OP if P95 is the only unstable thing then forget it. P95 is just a test, it's not real world scenario. If you can use your pc normally for a week and no crashes then forget the p95 and keep the undervolt.

 

[ir_cow]

I'm surprised overclocking is still allowed on a laptop. I can only imagine how hot things are with a prime85 run...

 

[Deleted member 232534]

Hi, I'm using i9-13950HX, undervolted first using AC and DC loadline, then throttlestop. I've set my AC and DC loadline to 50 on my MSI laptop and -25mv in throttlestop.

In Cinebench R23 and R15, they are both stable enough that I can get 30min of load without crash, however in Prime 95 it immediately crashed, and this happened 8/10 times.

I've noticed that running Prim 95's small FFT I get significant higher power usage than like Cinebench. I have different profiles that I've set the turbo ratio limits the same, and CPU's clocks are the same, however in Prime 95 it will draw about 10~20w higher power.

I'm not aiming for thermal test, just stability. Also I would like to lower the fan noise, so I've set a relatively low power and temperature target. By default it can boost up to 150~160w and stable at 105w at 95c, I've set it to 125w boost and 85w sustained. The turbo time is just right that at the very end of turbo it touches the limit slightly. So for stability test, which one should I aim for?

from the 2 listed apps only prime95 is a stability test and honestly not that good one.

my system was prime95 stable for hours and would crash in minutes in aida64

 

[Assimilator]

Aim for whatever is sufficiently stable for the workloads that you use the machine for.

 

[ProgUn1corn]

Thanks everyone. The laptop hasn't crashed once with undervolt, it only crashes in Prime 95, but not BSOD, just Prime 95 closed on itself. In real world workload I'm stable.

I'm surprised overclocking is still allowed on a laptop. I can only imagine how hot things are with a prime85 run...

Yeah, it's super hot. Actually I think it's somewhat unreasonable for a kinda thin laptop that doesn't have the beefiest cooling, it's too hard on a laptop. I think maybe it's good for testing thermal solution on a water cooled desktop.