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 650
CORE STATE
GK106
VRAM
1024 MB
CLOCK SPEED
—
TDP
65 W
BUS WIDTH
128 bit
ARCHITECTURE
Kepler
PROCESS
28 nm
LAUNCH DATE
2013
PERFORMANCE BENCHMARKS
geekbench_opencl
geekbench_metal
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
HD 7970
GTX 650
Core Specs
Shading Units
2,048
384
-81.3%
Shaders
2,048
384
-81.3%
TMUs
128
32
-75.0%
ROPs
32
16
-50.0%
Compute Units
32
—
Clocks
GPU Clock
925 MHz
1058 MHz
Memory Clock
1375 MHz
5.5 Gbps effective
1250 MHz
5 Gbps effective
Memory
Memory Size
3 GB
1024 MB
VRAM (MB)
3,072
1,024
-66.7%
Memory Type
GDDR5
GDDR5
Memory Bus
384 bit
128 bit
Bandwidth
264.0 GB/s
80.00 GB/s
Cache
L1 Cache
16 KB (per CU)
16 KB (per SMX)
L2 Cache
768 KB
256 KB
Performance
Pixel Rate
29.60 GPixel/s
8.464 GPixel/s
Texture Rate
118.4 GTexel/s
33.86 GTexel/s
FP32 (TFLOPS)
3.789 TFLOPS
812.5 GFLOPS
FP64 (TFLOPS)
947.2 GFLOPS (1:4)
33.86 GFLOPS (1:24)
Power
TDP
250 W
65 W
TDP (W)
250
65
-74.0%
Suggested PSU
600 W
250 W
Power Connectors
1x 6-pin + 1x 8-pin
1x 6-pin
Architecture
Architecture
GCN 1.0
Kepler
GPU Name
Tahiti
GK106
Generation
Southern Islands
(HD 7900)
GeForce 600
Process Size
28 nm
28 nm
Transistors
4,313 million
2,540 million
Die Size
352 mm²
221 mm²
Foundry
TSMC
TSMC
Density
12.3M / mm²
11.5M / 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
Single-slot
Length
275 mm
10.8 inches
147 mm
5.8 inches
Height
111 mm
4.4 inches
—
Outputs
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
1x DVI2x DisplayPort 1.2
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Other
Launch Price
549 USD
—
Production
End-of-life
End-of-life
Predecessor
Northern Islands
GeForce 500
Successor
Sea Islands
GeForce 700