Many 6th, 7th and 8th Generation motherboards address the AVX problem by providing offset adjustments in BIOS.
I7 CPU STRESS TEST UPGRADE
If you’re overclocked and run AVX apps such as for rendering or transcoding, you may need to reduce Vcore and Core speed or upgrade your cooler and case fans so Core temperatures don’t reach 85☌. If you're overclocked, then a combination of stress tests, apps or games must be run to verify CPU stability. Stability testing is not within the scope of this Guide, which assumes your rig is properly assembled, configured and stable. Note 1: Keep in mind that we're thermal testing only. Each 10 minute test will establish a valid thermal "baseline" at steady 100% workload and at dead idle. Follow the "Setup" in both Sections to replicate Intel's test conditions.
I7 CPU STRESS TEST HOW TO
Sections 12 and 13 will explain how to properly test your rig using standardized methods which minimize hardware, software and environmental variables. Under proper test conditions, there are only three relevant values:Ĭore temperatures at steady 100% workload. AVX doesn't affect Core i 1st Generation, Core 2, Pentium or Celeron processors since they don't have AVX Instruction Sets. However, since Core temperatures will be the same as 26.6, it's easier to just use 26.6. The FPU test in the utility AIDA64 shows similar results.ĪVX can be disabled in Prime95 versions later than 26.6 by inserting "CpuSupportsAVX=0" into the "local.txt" file in Prime95's folder.
I7 CPU STRESS TEST CODE
Prime95 versions later than 26.6 run AVX code on the CPU's Floating Point Unit (FPU) which causes unrealistic temperatures up to 20☌ higher. Note: Do not use Prime95 versions later than 26.6 on 2nd through 8th Generation i3, i5 or i7 CPU's, which all have AVX (Advanced Vector Extension) Instruction Sets. This is also the utility that Real Temp uses to test Core temperature sensors. No other utility so closely replicates Intel's proprietary test conditions. Prime95 version 26.6 Small FFT's is ideal for CPU thermal testing, because it's a steady 100% workload with steady Core temperatures that typically runs Core i variants with Hyperthreading and Core 2 processors within +/- a few % of TDP. Intel tests their processors under carefully controlled conditions at 100% TDP. Also, 100% CPU utilization seldom equals 100% workload or Thermal Design Power (TDP). Gaming, applications, rendering, transcoding, virus scanning and web surfing are partial and fluctuating workloads with fluctuating temperatures, which aren’t well suited for testing thermal performance. “Load” or “full load” are misleading user terms that could mean anything. Since Ambient temperature, hardware configurations and stress test software are major variables, in order to compare apples to apples it's important to be specific. Here's some reasons why users find processor temperatures so confusing: This minimizes variables so results will be consistent and repeatable. One of the guiding principles for properly conducting a test, is that it's crucial to set up the same conditions and follow the same procedures every time. When working with processor temperatures, taking a methodical approach is always recommended. Although there are many utilities better suited for stability testing, I've never found any other utility better suited than P95 v26.6 Small FFT's for thermal testing.įor everyone's benefit, here's some highlights from the Guide: I've evaluated every test utility available. I've been working on this topic for over 10 years to which I've devoted thousands of hours of research and hands on testing. Prime95 v26.6 Small FFT's is the best utility for thermal testing. Please read the entire Guide very carefully, however, pay especially close attention to Sections 11 and 12.įor the record, there is nothing wrong with Prime95 version 26.6! We have a Sticky which explains this in detail Intel Temperature Guide. The issue with Prime95 is strictly version dependent. Don't feel singled out, as there's a tremendous amount of misinformation circulating around the Internet concerning this poorly understood topic. Respectfully, you appear to be misinformed.
Don't use prime95 ever again, someone reported damaging their components,
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