GPU Comparison
RADEON
AMD Radeon HD 7950
CORE STATE
Tahiti
VRAM
3 GB
CLOCK SPEED
—
TDP
200 W
BUS WIDTH
384 bit
ARCHITECTURE
GCN 1.0
PROCESS
28 nm
LAUNCH DATE
2012
VS
GEFORCE
Quadro P400
CORE STATE
GP107
VRAM
2 GB
CLOCK SPEED
1252 MHz
TDP
30 W
BUS WIDTH
64 bit
ARCHITECTURE
Pascal
PROCESS
14 nm
LAUNCH DATE
2017
PERFORMANCE BENCHMARKS
geekbench_metal
geekbench_opencl
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
HD 7950
Quadro P400
Core Specs
Shading Units
1,792
256
-85.7%
Shaders
1,792
256
-85.7%
TMUs
112
16
-85.7%
ROPs
32
16
-50.0%
Compute Units
28
—
SM Count
—
2
Clocks
Base Clock
—
1228 MHz
Boost Clock
—
1252 MHz
GPU Clock
800 MHz
—
Memory Clock
1250 MHz
5 Gbps effective
1002 MHz
4 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
64 bit
Bandwidth
240.0 GB/s
32.06 GB/s
Cache
L1 Cache
16 KB (per CU)
48 KB (per SM)
L2 Cache
768 KB
512 KB
Performance
Pixel Rate
25.60 GPixel/s
20.03 GPixel/s
Texture Rate
89.60 GTexel/s
20.03 GTexel/s
FP32 (TFLOPS)
2.867 TFLOPS
641.0 GFLOPS
FP64 (TFLOPS)
716.8 GFLOPS (1:4)
20.03 GFLOPS (1:32)
FP16 (TFLOPS)
—
10.02 GFLOPS (1:64)
Power
TDP
200 W
30 W
TDP (W)
200
30
-85.0%
Suggested PSU
550 W
200 W
Power Connectors
2x 6-pin
None
Architecture
Architecture
GCN 1.0
Pascal
GPU Name
Tahiti
GP107
Generation
Southern Islands
(HD 7900)
Quadro Pascal
(Px000)
Process Size
28 nm
14 nm
Transistors
4,313 million
3,300 million
Die Size
352 mm²
132 mm²
Foundry
TSMC
Samsung
Density
12.3M / mm²
25.0M / 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
—
6.1
Shader Model
6.5 (5.1)
6.8
Physical
Slot Width
Dual-slot
Single-slot
Length
278 mm
10.9 inches
150 mm
5.9 inches
Height
111 mm
4.4 inches
69 mm
2.7 inches
Outputs
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
3x mini-DisplayPort 1.4a
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Other
Launch Price
449 USD
—
Production
End-of-life
End-of-life
Predecessor
Northern Islands
Quadro Maxwell
Successor
Sea Islands
Quadro Volta