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GPU Comparison
AMD Radeon RX 6600 XT vs ATI Radeon HD 3870 AGP
AMD Radeon RX 6600 XT vs ATI Radeon HD 3870 AGP
VS
AMD Radeon RX 6600 XT
ATI Radeon HD 3870 AGP
We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 6600 XT and 512MB VRAM Radeon HD 3870 AGP to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon RX 6600 XT 's Advantages
Boost Clock2589MHz
Larger VRAM bandwidth (256.0GB/s vs 72.06GB/s)
1728 additional rendering cores
ATI Radeon HD 3870 AGP 's Advantages
Lower TDP (106W vs 160W)
Score
Benchmark
FP32 (float)
Radeon RX 6600 XT
+2032%
10.6 TFLOPS
Radeon HD 3870 AGP
0.497 TFLOPS
Radeon RX 6600 XT
VS
Radeon HD 3870 AGP
Graphics Card
Jul 2021
Release Date
Unknown
Navi II
Generation
Radeon R600
Desktop
Type
Desktop
PCIe 4.0 x8
Bus Interface
AGP 8x
Clock Speeds
1968 MHz
Base Clock
-
2589 MHz
Boost Clock
-
2000 MHz
Memory Clock
1126 MHz
Memory
8GB
Memory Size
512MB
GDDR6
Memory Type
GDDR4
128bit
Memory Bus
256bit
256.0GB/s
Bandwidth
72.06GB/s
Render Config
-
SM Count
-
32
Compute Units
4
2048
Shading Units
320
128
TMUs
16
64
ROPs
16
-
Tensor Cores
-
32
RT Cores
-
128 KB per Array
L1 Cache
-
2 MB
L2 Cache
256 KB
Theoretical Performance
165.7 GPixel/s
Pixel Rate
12.43 GPixel/s
331.4 GTexel/s
Texture Rate
12.43 GTexel/s
21.21 TFLOPS
FP16 (half)
-
10.60 TFLOPS
FP32 (float)
497.3 GFLOPS
662.8 GFLOPS
FP64 (double)
99.46 GFLOPS
Graphics Processor
Navi 23
GPU Name
RV670
Navi 23 XT (215-130000006)
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
160W
TDP
106W
450 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 8-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
-
6.7
Shader Model
4.1
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