Home GPU Comparison AMD Radeon RX 7800M vs AMD Radeon HD 6870M

AMD Radeon RX 7800M vs AMD Radeon HD 6870M

We compared two Mobile platform GPUs: 12GB VRAM Radeon RX 7800M and 1024MB VRAM Radeon HD 6870M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 7800M 's Advantages
Released 13 years and 8 months late
Boost Clock2145MHz
More VRAM (12GB vs 1024GB)
Larger VRAM bandwidth (432GB/s vs 64.00GB/s)
3040 additional rendering cores
AMD Radeon HD 6870M 's Advantages
Lower TDP (50W vs 180W)

Score

Benchmark

FP32 (float)
Radeon RX 7800M +3221%
35.87 TFLOPS
Radeon HD 6870M
1.08 TFLOPS
VS

Graphics Card

Sep 2024
Release Date
Jan 2011
Navi Mobile
Generation
Vancouver
Mobile
Type
Mobile
PCIe 4.0 x16
Bus Interface
MXM-B (3.0)

Clock Speeds

1825 MHz
Base Clock
-
2145 MHz
Boost Clock
-
2250 MHz
Memory Clock
1000 MHz

Memory

12GB
Memory Size
1024MB
GDDR6
Memory Type
GDDR5
192bit
Memory Bus
128bit
432GB/s
Bandwidth
64.00GB/s

Render Config

60
Compute Units
10
-
-
-
3840
Shading Units
800
240
TMUs
40
96
ROPs
16
-
-
-
60
RT Cores
-
256 KB per Array
L1 Cache
8 KB (per CU)
6 MB
L2 Cache
256 KB
48 MB
L3 Cache
-

Theoretical Performance

401.3 GPixel/s
Pixel Rate
10.80 GPixel/s
560.4 GTexel/s
Texture Rate
27.00 GTexel/s
71.73 TFLOPS
FP16 (half)
-
35.87 TFLOPS
FP32 (float)
1080 GFLOPS
1121 GFLOPS
FP64 (double)
-

Board Design

180W
TDP
50W
-
-
-
Portable Device Dependent
Outputs
No outputs
None
Power Connectors
-

Graphics Processor

Navi 32
GPU Name
Granville
Navi 32
GPU Variant
Granville XT (216-0769024)
RDNA 3.0
Architecture
TeraScale 2
TSMC
Foundry
TSMC
5 nm
Process Size
40 nm
28.1 billion
Transistors
1.04 billion
529 mm²
Die Size
166 mm²

Graphics Features

12 Ultimate (12_2)
DirectX
11.2 (11_0)
4.6
OpenGL
4.4
2.2
OpenCL
1.2
1.3
Vulkan
N/A
-
-
-
6.7
Shader Model
5.0

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