AMD Radeon HD 7870 XT vs AMD Radeon HD 7970M
GPU · Specs Compare
Graphics Card
Release Date
Nov 2012
Apr 2012
Generation
Southern Islands
London
Type
Desktop
Mobile
Bus Interface
PCIe 3.0 x16
MXM-B (3.0)
Clock Speeds
Base Clock
925 MHz
—
Boost Clock
975 MHz
—
Memory Clock
1500 MHz
1200 MHz
Memory
Memory Size
2GB
2GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
256bit
Bandwidth
192.0GB/s
153.6GB/s
Render Config
Compute Units
24
20
Shading Units
1536
1280
TMUs
96
80
ROPs
32
32
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
512 KB
512 KB
Theoretical Performance
Pixel Rate
31.20 GPixel/s
27.20 GPixel/s
Texture Rate
93.60 GTexel/s
68.00 GTexel/s
FP32 (float)
2.995 TFLOPS
2.176 TFLOPS
FP64 (double)
748.8 GFLOPS
136.0 GFLOPS
Graphics Processor
GPU Name
Tahiti
Wimbledon
GPU Variant
Tahiti LE(215-0821122)
Wimbledon XT(216-0836036)
Architecture
GCN 1.0
GCN 1.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
4.313 billion
2.8 billion
Die Size
352 mm²
212 mm²
Board Design
TDP
185W
100W
Suggested PSU
450 W
—
Outputs
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
No outputs
Power Connectors
2x 6-pin
None
Graphics Features
DirectX
12 (11_1)
12 (11_1)
OpenGL
4.6
4.6
OpenCL
1.2
1.2
Vulkan
1.2
1.2
Shader Model
5.1
5.1
▲ Specs Compare
Data sourced from official specifications and benchmark tests.