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GPU Comparison
AMD Radeon RX 6600 vs ATI Radeon HD 3870 Mac Edition
AMD Radeon RX 6600 vs ATI Radeon HD 3870 Mac Edition
VS
AMD Radeon RX 6600
ATI Radeon HD 3870 Mac Edition
We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 6600 and 512MB VRAM Radeon HD 3870 Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon RX 6600 's Advantages
Released 13 years and 4 months late
Boost Clock2491MHz
Larger VRAM bandwidth (224.0GB/s vs 72.06GB/s)
1472 additional rendering cores
ATI Radeon HD 3870 Mac Edition 's Advantages
Lower TDP (106W vs 132W)
Score
Benchmark
FP32 (float)
Radeon RX 6600
+1696%
8.928 TFLOPS
Radeon HD 3870 Mac Edition
0.497 TFLOPS
Radeon RX 6600
VS
Radeon HD 3870 Mac Edition
Graphics Card
Oct 2021
Release Date
Jun 2008
Navi II
Generation
Radeon R600
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
1126 MHz
Memory
8GB
Memory Size
512MB
GDDR6
Memory Type
GDDR4
128bit
Memory Bus
256bit
224.0GB/s
Bandwidth
72.06GB/s
Render Config
-
SM Count
-
28
Compute Units
4
1792
Shading Units
320
112
TMUs
16
64
ROPs
16
-
Tensor Cores
-
28
RT Cores
-
128 KB per Array
L1 Cache
-
2 MB
L2 Cache
256 KB
Theoretical Performance
159.4 GPixel/s
Pixel Rate
12.43 GPixel/s
279.0 GTexel/s
Texture Rate
12.43 GTexel/s
17.86 TFLOPS
FP16 (half)
-
8.928 TFLOPS
FP32 (float)
497.3 GFLOPS
558.0 GFLOPS
FP64 (double)
99.46 GFLOPS
Graphics Processor
Navi 23
GPU Name
RV670
Navi 23 XL (215-130000016)
GPU Variant
RV670 XT (215-0708005)
RDNA 2.0
Architecture
TeraScale
TSMC
Foundry
TSMC
7 nm
Process Size
55 nm
11.06 billion
Transistors
0.666 billion
237 mm²
Die Size
192 mm²
Board Design
132W
TDP
106W
300 W
Suggested PSU
300 W
1x HDMI 2.1 3x DisplayPort 1.4a
Outputs
2x DVI 1x S-Video
1x 8-pin
Power Connectors
1x 6-pin
Graphics Features
12 Ultimate (12_2)
DirectX
10.1 (10_1)
4.6
OpenGL
3.3 (full) 4.0 (partial)
2.1
OpenCL
N/A
1.3
Vulkan
N/A
-
CUDA
-
6.5
Shader Model
4.1
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