Home GPU Comparison NVIDIA GeForce GTX 660 Rev. 2 vs AMD Radeon RX 6950 XT

NVIDIA GeForce GTX 660 Rev. 2 vs AMD Radeon RX 6950 XT

NVIDIA GeForce GTX 660 Rev. 2
VS
AMD Radeon RX 6950 XT
NVIDIA GeForce GTX 660 Rev. 2 AMD Radeon RX 6950 XT
We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 660 Rev. 2 and 16GB VRAM Radeon RX 6950 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 660 Rev. 2 's Advantages
Lower TDP (140W vs 335W)
AMD Radeon RX 6950 XT 's Advantages
Released 7 years and 8 months late
Boost Clock has increased by 124% (2310MHz vs 1032MHz)
More VRAM (16GB vs 2GB)
Larger VRAM bandwidth (576.0GB/s vs 144.2GB/s)
4160 additional rendering cores

Score

Benchmark

FP32 (float)
GeForce GTX 660 Rev. 2
1.981 TFLOPS
Radeon RX 6950 XT +1093%
23.65 TFLOPS
GeForce GTX 660 Rev. 2
VS
Radeon RX 6950 XT

Graphics Card

Sep 2014
Release Date
May 2022
GeForce 600
Generation
Navi II
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 4.0 x16

Clock Speeds

980 MHz
Base Clock
1860 MHz
1032 MHz
Boost Clock
2310 MHz
1502 MHz
Memory Clock
2250 MHz

Memory

2GB
Memory Size
16GB
GDDR5
Memory Type
GDDR6
192bit
Memory Bus
256bit
144.2GB/s
Bandwidth
576.0GB/s

Render Config

-
SM Count
-
-
Compute Units
80
960
Shading Units
5120
80
TMUs
320
24
ROPs
128
-
Tensor Cores
-
-
RT Cores
80
16 KB (per SMX)
L1 Cache
128 KB per Array
384 KB
L2 Cache
4 MB

Theoretical Performance

20.64 GPixel/s
Pixel Rate
295.7 GPixel/s
82.56 GTexel/s
Texture Rate
739.2 GTexel/s
-
FP16 (half)
47.31 TFLOPS
1.981 TFLOPS
FP32 (float)
23.65 TFLOPS
82.56 GFLOPS
FP64 (double)
1478 GFLOPS

Graphics Processor

GK104
GPU Name
Navi 21
-
GPU Variant
Navi 21 KXTX (215-121000289)
Kepler
Architecture
RDNA 2.0
TSMC
Foundry
TSMC
28 nm
Process Size
7 nm
3.54 billion
Transistors
26.8 billion
294 mm²
Die Size
520 mm²

Board Design

140W
TDP
335W
300 W
Suggested PSU
700 W
2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
Outputs
1x HDMI 2.1 2x DisplayPort 1.4a
1x 6-pin
Power Connectors
2x 8-pin

Graphics Features

12 (11_0)
DirectX
12 Ultimate (12_2)
4.6
OpenGL
4.6
3.0
OpenCL
2.1
1.1
Vulkan
1.3
3.0
CUDA
-
5.1
Shader Model
6.5

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