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GPU Comparison
AMD Radeon HD 6870 vs AMD Radeon RX 6600 XT
AMD Radeon HD 6870 vs AMD Radeon RX 6600 XT
VS
AMD Radeon HD 6870
AMD Radeon RX 6600 XT
We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 and 8GB VRAM Radeon RX 6600 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 6870 's Advantages
Lower TDP (151W vs 160W)
AMD Radeon RX 6600 XT 's Advantages
Released 10 years and 9 months late
Boost Clock2589MHz
More VRAM (8GB vs 1GB)
Larger VRAM bandwidth (256.0GB/s vs 134.4GB/s)
928 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon HD 6870
2.016 TFLOPS
Radeon RX 6600 XT
+425%
10.6 TFLOPS
Radeon HD 6870
VS
Radeon RX 6600 XT
Graphics Card
Oct 2010
Release Date
Jul 2021
Northern Islands
Generation
Navi II
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 4.0 x8
Clock Speeds
-
Base Clock
1968 MHz
-
Boost Clock
2589 MHz
1050 MHz
Memory Clock
2000 MHz
Memory
1024MB
Memory Size
8GB
GDDR5
Memory Type
GDDR6
256bit
Memory Bus
128bit
134.4GB/s
Bandwidth
256.0GB/s
Render Config
-
SM Count
-
14
Compute Units
32
1120
Shading Units
2048
56
TMUs
128
32
ROPs
64
-
Tensor Cores
-
-
RT Cores
32
8 KB (per CU)
L1 Cache
128 KB per Array
512 KB
L2 Cache
2 MB
Theoretical Performance
28.80 GPixel/s
Pixel Rate
165.7 GPixel/s
50.40 GTexel/s
Texture Rate
331.4 GTexel/s
-
FP16 (half)
21.21 TFLOPS
2.016 TFLOPS
FP32 (float)
10.60 TFLOPS
-
FP64 (double)
662.8 GFLOPS
Graphics Processor
Barts
GPU Name
Navi 23
Barts XT (215-0798000)
GPU Variant
Navi 23 XT (215-130000006)
TeraScale 2
Architecture
RDNA 2.0
TSMC
Foundry
TSMC
40 nm
Process Size
7 nm
1.7 billion
Transistors
11.06 billion
255 mm²
Die Size
237 mm²
Board Design
151W
TDP
160W
450 W
Suggested PSU
450 W
2x DVI 1x HDMI 1.3a 2x mini-DisplayPort 1.1
Outputs
1x HDMI 2.1 3x DisplayPort 1.4a
2x 6-pin
Power Connectors
1x 8-pin
Graphics Features
11.2 (11_0)
DirectX
12 Ultimate (12_2)
4.4
OpenGL
4.6
1.2
OpenCL
2.1
N/A
Vulkan
1.3
-
CUDA
-
5.0
Shader Model
6.7
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