F5F Stay Refreshed Power Users Overclocking Question CPU will never get to its normal speed right away when it starts working.

Question CPU will never get to its normal speed right away when it starts working.

Question CPU will never get to its normal speed right away when it starts working.

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ripa5000
Posting Freak
884
03-16-2026, 01:01 PM
#1
Hello, I have an old computer rig based on an AMD X4 870K (Base speed 3.9, Turbo speed 4.1). I bought an RX 570 Strix gaming OC for about $90 and thought it was way too powerful for this CPU. So I tried to overheat it a little bit while experimenting with bad times on the system. After testing at 4.2 GHz, everything looked fine until I ran the CPUBench benchmark. Then, once I started the test, the CPU speed dropped down to 3.7 and stayed there even when running full load. I tried changing the voltage up or down but could not get it stable because my motherboard is really old (A68HM-P33 v2). I do not want to upgrade the CPU until next summer, so I need help getting this rig to work properly. Can anyone tell me what's wrong? Also, the benchmark scores are terrible. An AMD A E8500 dual core actually beats my CPU on multi-threading and beats my 870K a lot on single thread—280 points vs 218 points. I need to say that I tried stress tests like Cinebench, AIDA64, and other things. Every time (including playing games) my CPU never goes above 3.7 GHz except when the load is less than 20 percent. Here is my CPU under a CPU-Z stress test
R
ripa5000
03-16-2026, 01:01 PM #1

Hello, I have an old computer rig based on an AMD X4 870K (Base speed 3.9, Turbo speed 4.1). I bought an RX 570 Strix gaming OC for about $90 and thought it was way too powerful for this CPU. So I tried to overheat it a little bit while experimenting with bad times on the system. After testing at 4.2 GHz, everything looked fine until I ran the CPUBench benchmark. Then, once I started the test, the CPU speed dropped down to 3.7 and stayed there even when running full load. I tried changing the voltage up or down but could not get it stable because my motherboard is really old (A68HM-P33 v2). I do not want to upgrade the CPU until next summer, so I need help getting this rig to work properly. Can anyone tell me what's wrong? Also, the benchmark scores are terrible. An AMD A E8500 dual core actually beats my CPU on multi-threading and beats my 870K a lot on single thread—280 points vs 218 points. I need to say that I tried stress tests like Cinebench, AIDA64, and other things. Every time (including playing games) my CPU never goes above 3.7 GHz except when the load is less than 20 percent. Here is my CPU under a CPU-Z stress test

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Caio_JS
Member
53
03-16-2026, 08:32 PM
#2
Did you look at how hot things got?
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Caio_JS
03-16-2026, 08:32 PM #2

Did you look at how hot things got?

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FREE_GAMES
Member
75
03-17-2026, 09:23 AM
#3
The temperatures aren't bad even though this old CPU has a high wattage rating. It sits quietly around 45 to 50 degrees when not working hard, and climbs just to about 60 to 65 degrees when it's pushing its limits.
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FREE_GAMES
03-17-2026, 09:23 AM #3

The temperatures aren't bad even though this old CPU has a high wattage rating. It sits quietly around 45 to 50 degrees when not working hard, and climbs just to about 60 to 65 degrees when it's pushing its limits.

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bossmanjj
Junior Member
16
03-19-2026, 07:29 AM
#4
Before 2020, my 870K couldn't even take full load. It ran at about 90% speed on a 3.9GHz clock until I paid $6 to buy an AMD S3.0 cooler. That coolers made the aluminum block smooth, so now my 870K runs in OC mode at 4.4GHz with a 100% load because the old brass column was rough. The tempwall is only 70°C.
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bossmanjj
03-19-2026, 07:29 AM #4

Before 2020, my 870K couldn't even take full load. It ran at about 90% speed on a 3.9GHz clock until I paid $6 to buy an AMD S3.0 cooler. That coolers made the aluminum block smooth, so now my 870K runs in OC mode at 4.4GHz with a 100% load because the old brass column was rough. The tempwall is only 70°C.