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GPU Comparison
AMD Radeon HD 6870M vs AMD Radeon RX 6800M
AMD Radeon HD 6870M vs AMD Radeon RX 6800M
VS
AMD Radeon HD 6870M
AMD Radeon RX 6800M
We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 6870M and 12GB VRAM Radeon RX 6800M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 6870M 's Advantages
Lower TDP (50W vs 145W)
AMD Radeon RX 6800M 's Advantages
Released 10 years and 4 months late
Boost Clock2390MHz
More VRAM (12GB vs 1GB)
Larger VRAM bandwidth (384.0GB/s vs 64.00GB/s)
1760 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon HD 6870M
1.08 TFLOPS
Radeon RX 6800M
+1033%
12.24 TFLOPS
Radeon HD 6870M
VS
Radeon RX 6800M
Graphics Card
Jan 2011
Release Date
May 2021
Vancouver
Generation
Mobility Radeon
Mobile
Type
Mobile
MXM-B (3.0)
Bus Interface
PCIe 4.0 x16
Clock Speeds
-
Base Clock
2116 MHz
-
Boost Clock
2390 MHz
1000 MHz
Memory Clock
2000 MHz
Memory
1024MB
Memory Size
12GB
GDDR5
Memory Type
GDDR6
128bit
Memory Bus
192bit
64.00GB/s
Bandwidth
384.0GB/s
Render Config
-
SM Count
-
10
Compute Units
40
800
Shading Units
2560
40
TMUs
160
16
ROPs
64
-
Tensor Cores
-
-
RT Cores
40
8 KB (per CU)
L1 Cache
128 KB per Array
256 KB
L2 Cache
3 MB
Theoretical Performance
10.80 GPixel/s
Pixel Rate
153.0 GPixel/s
27.00 GTexel/s
Texture Rate
382.4 GTexel/s
-
FP16 (half)
24.47 TFLOPS
1080 GFLOPS
FP32 (float)
12.24 TFLOPS
-
FP64 (double)
764.8 GFLOPS
Graphics Processor
Granville
GPU Name
Navi 22
Granville XT (216-0769024)
GPU Variant
Navi 22 XTM
TeraScale 2
Architecture
RDNA 2.0
TSMC
Foundry
TSMC
40 nm
Process Size
7 nm
1.04 billion
Transistors
17.2 billion
166 mm²
Die Size
335 mm²
Board Design
50W
TDP
145W
-
Suggested PSU
-
No outputs
Outputs
No outputs
-
Power Connectors
None
Graphics Features
11.2 (11_0)
DirectX
12 Ultimate (12_2)
4.4
OpenGL
4.6
1.2
OpenCL
2.1
N/A
Vulkan
1.3
-
CUDA
-
5.0
Shader Model
6.5
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