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Confusing GPGPU benchmarks

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Jan 1, 2021
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System Name The Sparing-No-Expense Build
Processor Ryzen 5 5600X
Motherboard Asus ROG Strix X570-E Gaming Wifi II
Cooling Noctua NH-U12S chromax.black
Memory 32GB: 2x16GB Patriot Viper Steel 3600MHz C18
Video Card(s) NVIDIA RTX 3060Ti Founder's Edition
Storage 500GB 970 Evo Plus NVMe, 2TB Crucial MX500
Display(s) AOC C24G1 144Hz 24" 1080p Monitor
Case Lian Li O11 Dynamic EVO White
Power Supply Seasonic X-650 Gold PSU (SS-650KM3)
Software Windows 11 Home 64-bit
Hi all,

These are the numbers I get from running AIDA64 Extreme's GPGPU benchmark:

1611164788366.png


GPU is a reference 3060Ti.
I'm a bit confused by these numbers.
First, look at the Single-Precision flops.
Theoretically, the reference card is supposed to get 16.2 TFLOPS speed. However, I'm getting 18.6.
For memory copy, however, I'm supposed to get 448,000 MB/s; I'm only getting 390,000.

Why more on one metric, less on another?

If it helps, my card has specs like this:
3060Ti.gif


In Unigine Heaven, I get even higher boost clocks: 1935 MHz.
Memory stays at 1750 maximum.
 
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