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 GT 740M
CORE STATE
GK208
VRAM
2 GB
CLOCK SPEED
1033 MHz
TDP
33 W
BUS WIDTH
64 bit
ARCHITECTURE
Kepler 2.0
PROCESS
28 nm
LAUNCH DATE
2013
PERFORMANCE BENCHMARKS
geekbench_opencl
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
HD 7970
GT 740M
Core Specs
Shading Units
2,048
384
-81.3%
Shaders
2,048
384
-81.3%
TMUs
128
32
-75.0%
ROPs
32
8
-75.0%
Compute Units
32
—
Clocks
Base Clock
—
980 MHz
Boost Clock
—
1033 MHz
GPU Clock
925 MHz
—
Memory Clock
1375 MHz
5.5 Gbps effective
900 MHz
1800 Mbps effective
Memory
Memory Size
3 GB
2 GB
VRAM (MB)
3,072
2,048
-33.3%
Memory Type
GDDR5
DDR3
Memory Bus
384 bit
64 bit
Bandwidth
264.0 GB/s
14.40 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
8.264 GPixel/s
Texture Rate
118.4 GTexel/s
33.06 GTexel/s
FP32 (TFLOPS)
3.789 TFLOPS
793.3 GFLOPS
FP64 (TFLOPS)
947.2 GFLOPS (1:4)
33.06 GFLOPS (1:24)
Power
TDP
250 W
33 W
TDP (W)
250
33
-86.8%
Suggested PSU
600 W
—
Power Connectors
1x 6-pin + 1x 8-pin
None
Architecture
Architecture
GCN 1.0
Kepler 2.0
GPU Name
Tahiti
GK208
Generation
Southern Islands
(HD 7900)
GeForce 700M
Process Size
28 nm
28 nm
Transistors
4,313 million
1,020 million
Die Size
352 mm²
87 mm²
Foundry
TSMC
TSMC
Density
12.3M / mm²
11.7M / 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
—
3.5
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
PCIe 3.0 x8
Other
Launch Price
549 USD
—
Production
End-of-life
End-of-life
Predecessor
Northern Islands
GeForce 600M
Successor
Sea Islands
GeForce 800M