AMD Radeon RX 6900 XT vs NVIDIA GeForce GTX 660 Ti
GPU Specs Compare
Graphics Card
Release Date
Oct 2020
Aug 2012
Generation
Navi II
GeForce 600
Type
Desktop
Desktop
Bus Interface
PCIe 4.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
1825 MHz
915 MHz
Boost Clock
2250 MHz
980 MHz
Memory Clock
2000 MHz
1502 MHz
Memory
Memory Size
16GB
2GB
Memory Type
GDDR6
GDDR5
Memory Bus
256bit
192bit
Bandwidth
512.0GB/s
144.2GB/s
Render Config
Compute Units
80
-
Shading Units
5120
1344
TMUs
320
112
ROPs
128
24
RT Cores
80
-
L1 Cache
128 KB per Array
16 KB (per SMX)
L2 Cache
4 MB
384 KB
L3 Cache
128 MB
-
Theoretical Performance
Pixel Rate
288.0 GPixel/s
27.44 GPixel/s
Texture Rate
720.0 GTexel/s
109.8 GTexel/s
FP16 (half)
46.08 TFLOPS
-
FP32 (float)
23.04 TFLOPS
2.634 TFLOPS
FP64 (double)
1440.0 GFLOPS
109.8 GFLOPS
Graphics Processor
GPU Name
Navi 21
GK104
GPU Variant
Navi 21 XTX(215-121000167)
GK104-300-KD-A2
Architecture
RDNA 2.0
Kepler
Foundry
TSMC
TSMC
Process Size
7 nm
28 nm
Transistors
26.8 billion
3.54 billion
Die Size
520 mm²
294 mm²
Board Design
TDP
300W
150W
Suggested PSU
700 W
450 W
Outputs
1x HDMI 2.12x DisplayPort 1.4a1x USB Type-C
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
Power Connectors
2x 8-pin
2x 6-pin
Graphics Features
DirectX
12 Ultimate (12_2)
12 (11_0)
OpenGL
4.6
4.6
OpenCL
2.1
3.0
Vulkan
1.4
1.1
Shader Model
6.8
5.1
CUDA
-
3.0
📊 Benchmark
3DMark Time Spy
20,764
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