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GPU Comparison
AMD Radeon RX 6600 vs AMD Radeon HD 6950
AMD Radeon RX 6600 vs AMD Radeon HD 6950
VS
AMD Radeon RX 6600
AMD Radeon HD 6950
We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 6600 and 2GB VRAM Radeon HD 6950 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon RX 6600 's Advantages
Released 10 years and 10 months late
Boost Clock2491MHz
More VRAM (8GB vs 2GB)
Larger VRAM bandwidth (224.0GB/s vs 160.0GB/s)
384 additional rendering cores
Lower TDP (132W vs 200W)
Score
Benchmark
FP32 (float)
Radeon RX 6600
+296%
8.928 TFLOPS
Radeon HD 6950
2.253 TFLOPS
Radeon RX 6600
VS
Radeon HD 6950
Graphics Card
Oct 2021
Release Date
Dec 2010
Navi II
Generation
Northern Islands
Desktop
Type
Desktop
PCIe 4.0 x8
Bus Interface
PCIe 2.0 x16
Clock Speeds
1626 MHz
Base Clock
-
2491 MHz
Boost Clock
-
1750 MHz
Memory Clock
1250 MHz
Memory
8GB
Memory Size
2GB
GDDR6
Memory Type
GDDR5
128bit
Memory Bus
256bit
224.0GB/s
Bandwidth
160.0GB/s
Render Config
-
SM Count
-
28
Compute Units
22
1792
Shading Units
1408
112
TMUs
88
64
ROPs
32
-
Tensor Cores
-
28
RT Cores
-
128 KB per Array
L1 Cache
8 KB (per CU)
2 MB
L2 Cache
512 KB
Theoretical Performance
159.4 GPixel/s
Pixel Rate
25.60 GPixel/s
279.0 GTexel/s
Texture Rate
70.40 GTexel/s
17.86 TFLOPS
FP16 (half)
-
8.928 TFLOPS
FP32 (float)
2.253 TFLOPS
558.0 GFLOPS
FP64 (double)
563.2 GFLOPS
Graphics Processor
Navi 23
GPU Name
Cayman
Navi 23 XL (215-130000016)
GPU Variant
Cayman PRO (215-0807019)
RDNA 2.0
Architecture
TeraScale 3
TSMC
Foundry
TSMC
7 nm
Process Size
40 nm
11.06 billion
Transistors
2.64 billion
237 mm²
Die Size
389 mm²
Board Design
132W
TDP
200W
300 W
Suggested PSU
550 W
1x HDMI 2.1 3x DisplayPort 1.4a
Outputs
2x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2
1x 8-pin
Power Connectors
2x 6-pin
Graphics Features
12 Ultimate (12_2)
DirectX
11.2 (11_0)
4.6
OpenGL
4.4
2.1
OpenCL
1.2
1.3
Vulkan
N/A
-
CUDA
-
6.5
Shader Model
5.0
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9
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