AMD Radeon RX 6700 XT vs NVIDIA GeForce GTX 660 OEM
GPU Specs Compare
Graphics Card
Release Date
Mar 2021
Aug 2012
Generation
Navi II
GeForce 600
Type
Desktop
Desktop
Bus Interface
PCIe 4.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
2321 MHz
823 MHz
Boost Clock
2581 MHz
888 MHz
Memory Clock
2000 MHz
1400 MHz
Memory
Memory Size
12GB
1536MB
Memory Type
GDDR6
GDDR5
Memory Bus
192bit
192bit
Bandwidth
384.0GB/s
134.4GB/s
Render Config
Compute Units
40
-
Shading Units
2560
1152
TMUs
160
96
ROPs
64
24
RT Cores
40
-
L1 Cache
128 KB per Array
16 KB (per SMX)
L2 Cache
3 MB
384 KB
L3 Cache
96 MB
-
Theoretical Performance
Pixel Rate
165.2 GPixel/s
21.31 GPixel/s
Texture Rate
413.0 GTexel/s
85.25 GTexel/s
FP16 (half)
26.43 TFLOPS
-
FP32 (float)
13.21 TFLOPS
2.046 TFLOPS
FP64 (double)
825.9 GFLOPS
85.25 GFLOPS
Graphics Processor
GPU Name
Navi 22
GK104
GPU Variant
Navi 22 XT(215-127000006)
GK104-200-KD-A2
Architecture
RDNA 2.0
Kepler
Foundry
TSMC
TSMC
Process Size
7 nm
28 nm
Transistors
17.2 billion
3.54 billion
Die Size
335 mm²
294 mm²
Board Design
TDP
230W
130W
Suggested PSU
550 W
300 W
Outputs
1x HDMI 2.13x DisplayPort 1.4a
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
Power Connectors
1x 6-pin + 1x 8-pin
1x 6-pin
Graphics Features
DirectX
12 Ultimate (12_2)
12 (11_0)
OpenGL
4.6
4.6
OpenCL
2.1
3.0
Vulkan
1.3
1.1
Shader Model
6.5
5.1
CUDA
-
3.0
📊 Benchmark
3DMark Time Spy
-
1,194
3DMark Time Spy Extreme
-
260