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GPU Comparison
AMD Radeon RX 7800 vs ATI Radeon HD 3870 X2
AMD Radeon RX 7800 vs ATI Radeon HD 3870 X2
VS
AMD Radeon RX 7800
ATI Radeon HD 3870 X2
We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 7800 and 512MB VRAM Radeon HD 3870 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon RX 7800 's Advantages
Released 15 years late
Boost Clock2800MHz
More VRAM (16GB vs 512GB)
Larger VRAM bandwidth (576.0GB/s vs 57.66GB/s)
3520 additional rendering cores
ATI Radeon HD 3870 X2 's Advantages
Lower TDP (165W vs 300W)
Score
Benchmark
FP32 (float)
Radeon RX 7800
+6968%
37.32 TFLOPS
Radeon HD 3870 X2
0.528 TFLOPS
Radeon RX 7800
VS
Radeon HD 3870 X2
Graphics Card
Jan 2023
Release Date
Jan 2008
Navi III
Generation
Radeon R600
Desktop
Type
Desktop
PCIe 4.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
1800 MHz
Base Clock
-
2800 MHz
Boost Clock
-
2250 MHz
Memory Clock
901 MHz
Memory
16GB
Memory Size
512MB
GDDR6
Memory Type
GDDR3
256bit
Memory Bus
256bit
576.0GB/s
Bandwidth
57.66GB/s
Render Config
60
Compute Units
4
-
-
-
3840
Shading Units
320
240
TMUs
16
128
ROPs
16
-
-
-
60
RT Cores
-
128 KB per Array
L1 Cache
-
4 MB
L2 Cache
256 KB
64 MB
L3 Cache
-
Theoretical Performance
358.4 GPixel/s
Pixel Rate
13.20 GPixel/s
672.0 GTexel/s
Texture Rate
13.20 GTexel/s
86.02 TFLOPS
FP16 (half)
-
43.01 TFLOPS
FP32 (float)
528.0 GFLOPS
1344 GFLOPS
FP64 (double)
105.6 GFLOPS
Board Design
300W
TDP
165W
700 W
Suggested PSU
450 W
1x HDMI 2.1a 3x DisplayPort 2.1
Outputs
2x DVI 1x S-Video
2x 8-pin
Power Connectors
1x 6-pin + 1x 8-pin
Graphics Processor
Navi 32
GPU Name
R680
Navi 32 XT
GPU Variant
R680 XT (215-0708017)
RDNA 3.0
Architecture
TeraScale
TSMC
Foundry
TSMC
5 nm
Process Size
55 nm
Unknown
Transistors
0.666 billion
346 mm²
Die Size
192 mm²
Graphics Features
12 Ultimate (12_2)
DirectX
10.1 (10_1)
4.6
OpenGL
3.3 (full) 4.0 (partial)
2.2
OpenCL
N/A
1.3
Vulkan
N/A
-
-
-
6.7
Shader Model
4.1
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