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GPU Comparison
AMD Radeon RX 6700 XT vs ATI Radeon HD 3870 AGP
AMD Radeon RX 6700 XT vs ATI Radeon HD 3870 AGP
VS
AMD Radeon RX 6700 XT
ATI Radeon HD 3870 AGP
We compared two Desktop platform GPUs: 12GB VRAM Radeon RX 6700 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 6700 XT 's Advantages
Boost Clock2581MHz
Larger VRAM bandwidth (384.0GB/s vs 72.06GB/s)
2240 additional rendering cores
ATI Radeon HD 3870 AGP 's Advantages
Lower TDP (106W vs 230W)
Score
Benchmark
FP32 (float)
Radeon RX 6700 XT
+2557%
13.21 TFLOPS
Radeon HD 3870 AGP
0.497 TFLOPS
Radeon RX 6700 XT
VS
Radeon HD 3870 AGP
Graphics Card
Mar 2021
Release Date
Unknown
Navi II
Generation
Radeon R600
Desktop
Type
Desktop
PCIe 4.0 x16
Bus Interface
AGP 8x
Clock Speeds
2321 MHz
Base Clock
-
2581 MHz
Boost Clock
-
2000 MHz
Memory Clock
1126 MHz
Memory
12GB
Memory Size
512MB
GDDR6
Memory Type
GDDR4
192bit
Memory Bus
256bit
384.0GB/s
Bandwidth
72.06GB/s
Render Config
-
SM Count
-
40
Compute Units
4
2560
Shading Units
320
160
TMUs
16
64
ROPs
16
-
Tensor Cores
-
40
RT Cores
-
128 KB per Array
L1 Cache
-
3 MB
L2 Cache
256 KB
Theoretical Performance
165.2 GPixel/s
Pixel Rate
12.43 GPixel/s
413.0 GTexel/s
Texture Rate
12.43 GTexel/s
26.43 TFLOPS
FP16 (half)
-
13.21 TFLOPS
FP32 (float)
497.3 GFLOPS
825.9 GFLOPS
FP64 (double)
99.46 GFLOPS
Graphics Processor
Navi 22
GPU Name
RV670
Navi 22 XT (215-127000006)
GPU Variant
RV670 XT (215-0708005)
RDNA 2.0
Architecture
TeraScale
TSMC
Foundry
TSMC
7 nm
Process Size
55 nm
17.2 billion
Transistors
0.666 billion
335 mm²
Die Size
192 mm²
Board Design
230W
TDP
106W
550 W
Suggested PSU
300 W
1x HDMI 2.1 3x DisplayPort 1.4a
Outputs
2x DVI 1x S-Video
1x 6-pin + 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
-
6.5
Shader Model
4.1
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