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GPU Comparison
AMD Radeon HD 6990M vs AMD Radeon R5 M420
AMD Radeon HD 6990M vs AMD Radeon R5 M420
VS
AMD Radeon HD 6990M
AMD Radeon R5 M420
We compared two Mobile platform GPUs: 2GB VRAM Radeon HD 6990M and 4GB VRAM Radeon R5 M420 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 6990M 's Advantages
Larger VRAM bandwidth (115.2GB/s vs 16.00GB/s)
800 additional rendering cores
AMD Radeon R5 M420 's Advantages
Released 4 years and 10 months late
Boost Clock850MHz
More VRAM (4GB vs 2GB)
Score
Benchmark
FP32 (float)
Radeon HD 6990M
+194%
1.602 TFLOPS
Radeon R5 M420
0.544 TFLOPS
Radeon HD 6990M
VS
Radeon R5 M420
Graphics Card
Jul 2011
Release Date
May 2016
Vancouver
Generation
Gem System
Mobile
Type
Mobile
MXM-B (3.0)
Bus Interface
PCIe 3.0 x8
Clock Speeds
-
Base Clock
780 MHz
-
Boost Clock
850 MHz
900 MHz
Memory Clock
1000 MHz
Memory
2GB
Memory Size
4GB
GDDR5
Memory Type
DDR3
256bit
Memory Bus
64bit
115.2GB/s
Bandwidth
16.00GB/s
Render Config
-
SM Count
-
14
Compute Units
5
1120
Shading Units
320
56
TMUs
20
32
ROPs
8
-
Tensor Cores
-
-
RT Cores
-
8 KB (per CU)
L1 Cache
16 KB (per CU)
512 KB
L2 Cache
128 KB
Theoretical Performance
22.88 GPixel/s
Pixel Rate
6.800 GPixel/s
40.04 GTexel/s
Texture Rate
17.00 GTexel/s
-
FP16 (half)
-
1.602 TFLOPS
FP32 (float)
544.0 GFLOPS
-
FP64 (double)
34.00 GFLOPS
Graphics Processor
Blackcomb
GPU Name
Jet
Blackcomb XTX (216-0811030)
GPU Variant
Jet PRO (216-0856040)
TeraScale 2
Architecture
GCN 1.0
TSMC
Foundry
TSMC
40 nm
Process Size
28 nm
1.7 billion
Transistors
0.69 billion
212 mm²
Die Size
56 mm²
Board Design
100W
TDP
Unknown
-
Suggested PSU
-
No outputs
Outputs
Portable Device Dependent
None
Power Connectors
-
Graphics Features
11.2 (11_0)
DirectX
12 (11_1)
4.4
OpenGL
4.6
1.2
OpenCL
2.1 (1.2)
N/A
Vulkan
1.2.170
-
CUDA
-
5.0
Shader Model
6.5 (5.1)
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8
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9
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