A A measure of CPU speed geared towards typical users. Intel i9-9900K ≈ 100%.

A single number

The effective CPU speed index approximates performance by distilling hundreds of data points into a single number. It is weighted towards typical consumer tasks.

The first few threads

Desktop tasks such as surfing the web with multiple tabs, watching videos and listening to music rarely use more than four threads. Very few of today's popular games benefit from more than four threads. There is not much difference in fps between a stock 4 core i3-9100F and an overclocked 16 thread Ryzen 2700X in fact the 9100F is actually around 8% faster. Gaming fps is primarily influenced by the GPU rather than the CPU.

More threads

Higher thread counts are critical for workstation tasks such as cryptography and film production where doubling the number of threads can sometimes half the time spent waiting.


Our indices are based on today’s performance requirements rather than marketing hype.

July 2019

We reduced the impact from thread counts higher than eight. The Ryzen 3000 gaming rank changes were net positive: 3900X -2, 3800X +7, 3600X +14, 3600 +13. The 2000 series 32-core Threadripper 2990WX moved from first position to 48th and the 8-core Intel 9900K took the top position in the gaming index up from its previous rank of 7.

August 2019

We introduced an octa thread component. This allowed us to fine tune emphasis on workloads between four and eight without 64 thread SKUs dominating the gaming index.

The Best.
Intel Core i5-9400F $140Nvidia GTX 1660S (Super) $240Crucial MX500 250GB $45
Intel Core i5-9600K $195AMD RX 590 $185Samsung 850 Evo 120GB $150
Intel Core i7-9700K $340Nvidia RTX 2060 $325Samsung 860 Evo 250GB $51
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3000 C15 2x8GB $68SanDisk Extreme 64GB $88
WD Blue 1TB (2012) $40G.SKILL Trident Z DDR4 3200 C14 4x16GB $612SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $85Corsair Vengeance LPX DDR4 3200 C16 2x8GB $68SanDisk Extreme 16GB $24
Today's hottest deals
About  •  User Guide  •  FAQs  •  Email  •  Privacy  •  Developer Feedback