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GPU Comparison
AMD Radeon RX 6800 XT vs ATI Radeon HD 4870
AMD Radeon RX 6800 XT vs ATI Radeon HD 4870
VS
AMD Radeon RX 6800 XT
ATI Radeon HD 4870
We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 6800 XT and 512MB VRAM Radeon HD 4870 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon RX 6800 XT 's Advantages
Released 12 years and 4 months late
Boost Clock2250MHz
Larger VRAM bandwidth (512.0GB/s vs 115.2GB/s)
3808 additional rendering cores
ATI Radeon HD 4870 's Advantages
Lower TDP (150W vs 300W)
Score
Benchmark
FP32 (float)
Radeon RX 6800 XT
+1628%
20.74 TFLOPS
Radeon HD 4870
1.2 TFLOPS
Radeon RX 6800 XT
VS
Radeon HD 4870
Graphics Card
Oct 2020
Release Date
Jun 2008
Navi II
Generation
Radeon R700
Desktop
Type
Desktop
PCIe 4.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
1825 MHz
Base Clock
-
2250 MHz
Boost Clock
-
2000 MHz
Memory Clock
900 MHz
Memory
16GB
Memory Size
512MB
GDDR6
Memory Type
GDDR5
256bit
Memory Bus
256bit
512.0GB/s
Bandwidth
115.2GB/s
Render Config
-
SM Count
-
72
Compute Units
10
4608
Shading Units
800
288
TMUs
40
128
ROPs
16
-
Tensor Cores
-
72
RT Cores
-
128 KB per Array
L1 Cache
16 KB (per CU)
4 MB
L2 Cache
256 KB
Theoretical Performance
288.0 GPixel/s
Pixel Rate
12.00 GPixel/s
648.0 GTexel/s
Texture Rate
30.00 GTexel/s
41.47 TFLOPS
FP16 (half)
-
20.74 TFLOPS
FP32 (float)
1200 GFLOPS
1296 GFLOPS
FP64 (double)
240.0 GFLOPS
Graphics Processor
Navi 21
GPU Name
RV770
Navi 21 XT (215-121000177)
GPU Variant
RV770 XT (215-0669049)
RDNA 2.0
Architecture
TeraScale
TSMC
Foundry
TSMC
7 nm
Process Size
55 nm
26.8 billion
Transistors
0.956 billion
520 mm²
Die Size
256 mm²
Board Design
300W
TDP
150W
700 W
Suggested PSU
450 W
1x HDMI 2.1 2x DisplayPort 1.4a 1x USB Type-C
Outputs
2x DVI 1x S-Video
2x 8-pin
Power Connectors
2x 6-pin
Graphics Features
12 Ultimate (12_2)
DirectX
10.1 (10_1)
4.6
OpenGL
3.3
2.1
OpenCL
1.1
1.3
Vulkan
N/A
-
CUDA
-
6.5
Shader Model
4.1
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