Home GPU Comparison AMD Radeon HD 7970M vs AMD Radeon HD 7450A

AMD Radeon HD 7970M vs AMD Radeon HD 7450A

We compared two Mobile platform GPUs: 2GB VRAM Radeon HD 7970M and 512MB VRAM Radeon HD 7450A to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7970M 's Advantages
More VRAM (2GB vs 512GB)
Larger VRAM bandwidth (153.6GB/s vs 12.80GB/s)
1120 additional rendering cores
AMD Radeon HD 7450A 's Advantages
Lower TDP (25W vs 100W)

Score

Benchmark

FP32 (float)
Radeon HD 7970M +988%
2.176 TFLOPS
Radeon HD 7450A
0.2 TFLOPS
VS

Graphics Card

Apr 2012
Release Date
Jan 2012
London
Generation
All-In-One
Mobile
Type
Mobile
MXM-B (3.0)
Bus Interface
MXM-A (3.0)

Clock Speeds

-
-
-
-
-
-
1200 MHz
Memory Clock
800 MHz

Memory

2GB
Memory Size
512MB
GDDR5
Memory Type
GDDR3
256bit
Memory Bus
64bit
153.6GB/s
Bandwidth
12.80GB/s

Render Config

20
Compute Units
2
-
-
-
1280
Shading Units
160
80
TMUs
8
32
ROPs
4
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
8 KB (per CU)
512 KB
L2 Cache
128 KB
-
-
-

Theoretical Performance

27.20 GPixel/s
Pixel Rate
2.500 GPixel/s
68.00 GTexel/s
Texture Rate
5.000 GTexel/s
-
-
-
2.176 TFLOPS
FP32 (float)
200.0 GFLOPS
136.0 GFLOPS
FP64 (double)
-

Board Design

100W
TDP
25W
-
-
-
No outputs
Outputs
No outputs
None
Power Connectors
-

Graphics Processor

Wimbledon
GPU Name
Caicos
Wimbledon XT (216-0836036)
GPU Variant
-
GCN 1.0
Architecture
TeraScale 2
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
2.8 billion
Transistors
0.37 billion
212 mm²
Die Size
67 mm²

Graphics Features

12 (11_1)
DirectX
11.2 (11_0)
4.6
OpenGL
4.4
1.2
OpenCL
1.2
1.2
Vulkan
N/A
-
-
-
5.1
Shader Model
5.0

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