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> you will see that faster ram can bring enormous performance benefits Okay, so looking at the spreadsheet of results from the Reddit thread [0]: - Overclocki
by kogepathic 9y ago
> you will see that faster ram can bring enormous performance benefits
Okay, so looking at the spreadsheet of results from the Reddit thread [0]:
- Overclocking the RAM from 2133MHz to 3000MHz resulted on average an 8% increase in FPS. This is a 40% higher frequency netting on average 8% more performance
- They only tested two speeds: 2133MHz and 3000MHz
I would imagine that the difference between 2400MHz (officially the top speed of DDR4) and 3000MHz would be even less than the 8% they found.
Let's assume, based on no evidence whatsoever, that the performance gains are linear. For 40% increase in RAM clock, you get 8% performance gain.
So from:
- 2400MHz->3000MHz: 5% increase in performance
- 2666MHz->3000MHz: 2.5% increase in performance
You also have to account for the fact that:
- Higher speed RAM costs more
- Overclocking will consume more power and generate more heat
Based on the above, where the average benefit from a 40% RAM overclock was a mere 8% performance gain, I'm just not seeing how "enormous" the performance benefits are.
[0] https://docs.google.com/spreadsheets/d/1LKmt9FDEjFXeu3USK1bzjzRidhg3frgwWx7mPUlOWEc/edit#gid=1267098471 https://docs.google.com/spreadsheets/d/1LKmt9FDEjFXeu3USK1bz...
- onli 9y ago8% are huge for something that was said to be of no relevance at all in that specific workload. And it is 8% for a small price difference. Ram prices are in flux currently, but right now I see 16GB DDR4-2400 for 119€ and 16GB DDR4-3000 for 139€. Some time ago the price was almost identical. Also, please watch the video as well. The practical effect of having faster ram on frametimes is immense and sometimes a lot bigger than what you'd expect. Moving from just barely reaching 60 FPS in the Crysis train sequence to comfortable 80, with an i3, is very nice. There is also the Ryse sequence (~ at minute 7) where performance of the i3 doubles, just because of the faster ram.