GPU Comparison
RADEON
AMD Radeon HD 7970
CORE STATE
Tahiti
VRAM
3 GB
CLOCK SPEED
—
TDP
250 W
BUS WIDTH
384 bit
ARCHITECTURE
GCN 1.0
PROCESS
28 nm
LAUNCH DATE
2012
VS
GEFORCE
GeForce GTX 675MX
CORE STATE
GK104
VRAM
2 GB
CLOCK SPEED
—
TDP
100 W
BUS WIDTH
256 bit
ARCHITECTURE
Kepler
PROCESS
28 nm
LAUNCH DATE
2012
PERFORMANCE BENCHMARKS
geekbench_opencl
geekbench_metal
DETAILED SPECIFICATIONS
SPECIFICATION
HD 7970
GTX 675MX
Core Specs
Shading Units
2,048
960
-53.1%
Shaders
2,048
960
-53.1%
TMUs
128
80
-37.5%
ROPs
32
32
0.0%
Compute Units
32
—
Clocks
GPU Clock
925 MHz
654 MHz
Memory Clock
1375 MHz
5.5 Gbps effective
900 MHz
3.6 Gbps effective
Memory
Memory Size
3 GB
2 GB
VRAM (MB)
3,072
2,048
-33.3%
Memory Type
GDDR5
GDDR5
Memory Bus
384 bit
256 bit
Bandwidth
264.0 GB/s
115.2 GB/s
Cache
L1 Cache
16 KB (per CU)
16 KB (per SMX)
L2 Cache
768 KB
512 KB
Performance
Pixel Rate
29.60 GPixel/s
13.08 GPixel/s
Texture Rate
118.4 GTexel/s
52.32 GTexel/s
FP32 (TFLOPS)
3.789 TFLOPS
1,255.7 GFLOPS
FP64 (TFLOPS)
947.2 GFLOPS (1:4)
52.32 GFLOPS (1:24)
Power
TDP
250 W
100 W
TDP (W)
250
100
-60.0%
Suggested PSU
600 W
—
Power Connectors
1x 6-pin + 1x 8-pin
None
Architecture
Architecture
GCN 1.0
Kepler
GPU Name
Tahiti
GK104
Generation
Southern Islands
(HD 7900)
GeForce 600M
Process Size
28 nm
28 nm
Transistors
4,313 million
3,540 million
Die Size
352 mm²
294 mm²
Foundry
TSMC
TSMC
Density
12.3M / mm²
12.0M / mm²
API Support
DirectX
12 (11_1)
12 (11_0)
OpenGL
4.6
4.6
Vulkan
1.2.170
1.2.175
OpenCL
2.1 (1.2)
3.0
CUDA
—
3.0
Shader Model
6.5 (5.1)
6.5 (5.1)
Physical
Slot Width
Dual-slot
MXM Module
Length
275 mm
10.8 inches
—
Height
111 mm
4.4 inches
—
Outputs
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
Portable Device Dependent
Bus Interface
PCIe 3.0 x16
MXM-B (3.0)
Other
Launch Price
549 USD
—
Production
End-of-life
End-of-life
Predecessor
Northern Islands
GeForce 500M
Successor
Sea Islands
GeForce 700M