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GPU Comparison
AMD Radeon 620 Mobile vs AMD Radeon HD 7770M
AMD Radeon 620 Mobile vs AMD Radeon HD 7770M
VS
AMD Radeon 620 Mobile
AMD Radeon HD 7770M
We compared two Mobile platform GPUs: 2GB VRAM Radeon 620 Mobile and 1024MB VRAM Radeon HD 7770M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon 620 Mobile 's Advantages
Released 7 years and 1 months late
Boost Clock1024MHz
More VRAM (2GB vs 1GB)
AMD Radeon HD 7770M 's Advantages
Larger VRAM bandwidth (64.00GB/s vs 14.40GB/s)
128 additional rendering cores
Lower TDP (32W vs 50W)
Score
Benchmark
FP32 (float)
Radeon 620 Mobile
+13%
0.786 TFLOPS
Radeon HD 7770M
0.691 TFLOPS
Radeon 620 Mobile
VS
Radeon HD 7770M
Graphics Card
May 2019
Release Date
Apr 2012
Mobility Radeon
Generation
London
Mobile
Type
Mobile
PCIe 3.0 x8
Bus Interface
PCIe 2.0 x16
Clock Speeds
730 MHz
Base Clock
-
1024 MHz
Boost Clock
-
900 MHz
Memory Clock
1000 MHz
Memory
2GB
Memory Size
1024MB
DDR3
Memory Type
GDDR5
64bit
Memory Bus
128bit
14.40GB/s
Bandwidth
64.00GB/s
Render Config
-
SM Count
-
6
Compute Units
8
384
Shading Units
512
24
TMUs
32
8
ROPs
16
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
128 KB
L2 Cache
256 KB
Theoretical Performance
8.192 GPixel/s
Pixel Rate
10.80 GPixel/s
24.58 GTexel/s
Texture Rate
21.60 GTexel/s
786.4 GFLOPS
FP16 (half)
-
786.4 GFLOPS
FP32 (float)
691.2 GFLOPS
49.15 GFLOPS
FP64 (double)
43.20 GFLOPS
Graphics Processor
Polaris 24
GPU Name
Chelsea
Polaris 24 XL
GPU Variant
Chelsea XT
GCN 3.0
Architecture
GCN 1.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
1.55 billion
Transistors
1.5 billion
125 mm²
Die Size
123 mm²
Board Design
50W
TDP
32W
-
Suggested PSU
-
No outputs
Outputs
No outputs
None
Power Connectors
-
Graphics Features
12 (12_0)
DirectX
12 (11_1)
4.6
OpenGL
4.6
2.0
OpenCL
1.2
1.2
Vulkan
1.2
-
CUDA
-
6.3
Shader Model
5.1
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