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GPU Comparison
AMD Radeon RX 6600 vs AMD Radeon HD 6870 X2
AMD Radeon RX 6600 vs AMD Radeon HD 6870 X2
VS
AMD Radeon RX 6600
AMD Radeon HD 6870 X2
We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 6600 and 1024MB VRAM Radeon HD 6870 X2 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 3 months late
Boost Clock2491MHz
More VRAM (8GB vs 1GB)
Larger VRAM bandwidth (224.0GB/s vs 134.4GB/s)
672 additional rendering cores
Lower TDP (132W vs 300W)
Score
Benchmark
FP32 (float)
Radeon RX 6600
+342%
8.928 TFLOPS
Radeon HD 6870 X2
2.016 TFLOPS
Radeon RX 6600
VS
Radeon HD 6870 X2
Graphics Card
Oct 2021
Release Date
Jul 2011
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
1050 MHz
Memory
8GB
Memory Size
1024MB
GDDR6
Memory Type
GDDR5
128bit
Memory Bus
256bit
224.0GB/s
Bandwidth
134.4GB/s
Render Config
-
SM Count
-
28
Compute Units
14
1792
Shading Units
1120
112
TMUs
56
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
28.80 GPixel/s
279.0 GTexel/s
Texture Rate
50.40 GTexel/s
17.86 TFLOPS
FP16 (half)
-
8.928 TFLOPS
FP32 (float)
2.016 TFLOPS
558.0 GFLOPS
FP64 (double)
-
Graphics Processor
Navi 23
GPU Name
Barts
Navi 23 XL (215-130000016)
GPU Variant
Barts XT (215-0798000)
RDNA 2.0
Architecture
TeraScale 2
TSMC
Foundry
TSMC
7 nm
Process Size
40 nm
11.06 billion
Transistors
1.7 billion
237 mm²
Die Size
255 mm²
Board Design
132W
TDP
300W
300 W
Suggested PSU
700 W
1x HDMI 2.1 3x DisplayPort 1.4a
Outputs
2x DVI 1x HDMI 1.3a 2x mini-DisplayPort 1.1
1x 8-pin
Power Connectors
-
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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