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 950
CORE STATE
GM206
VRAM
2 GB
CLOCK SPEED
1188 MHz
TDP
90 W
BUS WIDTH
128 bit
ARCHITECTURE
Maxwell 2.0
PROCESS
28 nm
LAUNCH DATE
2015
PERFORMANCE BENCHMARKS
geekbench_opencl
geekbench_metal
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
HD 7970
GTX 950
Core Specs
Shading Units
2,048
768
-62.5%
Shaders
2,048
768
-62.5%
TMUs
128
48
-62.5%
ROPs
32
32
0.0%
Compute Units
32
—
Clocks
Base Clock
—
1024 MHz
Boost Clock
—
1188 MHz
GPU Clock
925 MHz
—
Memory Clock
1375 MHz
5.5 Gbps effective
1653 MHz
6.6 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
128 bit
Bandwidth
264.0 GB/s
105.8 GB/s
Cache
L1 Cache
16 KB (per CU)
48 KB (per SMM)
L2 Cache
768 KB
1024 KB
Performance
Pixel Rate
29.60 GPixel/s
38.02 GPixel/s
Texture Rate
118.4 GTexel/s
57.02 GTexel/s
FP32 (TFLOPS)
3.789 TFLOPS
1.825 TFLOPS
FP64 (TFLOPS)
947.2 GFLOPS (1:4)
57.02 GFLOPS (1:32)
Power
TDP
250 W
90 W
TDP (W)
250
90
-64.0%
Suggested PSU
600 W
250 W
Power Connectors
1x 6-pin + 1x 8-pin
1x 6-pin
Architecture
Architecture
GCN 1.0
Maxwell 2.0
GPU Name
Tahiti
GM206
Generation
Southern Islands
(HD 7900)
GeForce 900
Process Size
28 nm
28 nm
Transistors
4,313 million
2,940 million
Die Size
352 mm²
228 mm²
Foundry
TSMC
TSMC
Density
12.3M / mm²
12.9M / mm²
API Support
DirectX
12 (11_1)
12 (12_1)
OpenGL
4.6
4.6
Vulkan
1.2.170
1.4
OpenCL
2.1 (1.2)
3.0
CUDA
—
5.2
Shader Model
6.5 (5.1)
6.8
Physical
Slot Width
Dual-slot
Dual-slot
Length
275 mm
10.8 inches
202 mm
8 inches
Height
111 mm
4.4 inches
—
Outputs
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
1x DVI1x HDMI 2.03x DisplayPort 1.2
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Other
Launch Price
549 USD
159 USD
Production
End-of-life
End-of-life
Predecessor
Northern Islands
GeForce 700
Successor
Sea Islands
GeForce 10