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
GeForce GTX 850M
CORE STATE
GM107
VRAM
2 GB
CLOCK SPEED
—
TDP
45 W
BUS WIDTH
128 bit
ARCHITECTURE
Maxwell
PROCESS
28 nm
LAUNCH DATE
2014
PERFORMANCE BENCHMARKS
geekbench_metal
geekbench_opencl
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
HD 7950
GTX 850M
Core Specs
Shading Units
1,792
640
-64.3%
Shaders
1,792
640
-64.3%
TMUs
112
40
-64.3%
ROPs
32
16
-50.0%
Compute Units
28
—
Clocks
GPU Clock
800 MHz
902 MHz
Memory Clock
1250 MHz
5 Gbps effective
1001 MHz
2 Gbps effective
Memory
Memory Size
3 GB
2 GB
VRAM (MB)
3,072
2,048
-33.3%
Memory Type
GDDR5
DDR3
Memory Bus
384 bit
128 bit
Bandwidth
240.0 GB/s
32.03 GB/s
Cache
L1 Cache
16 KB (per CU)
64 KB (per SMM)
L2 Cache
768 KB
2 MB
Performance
Pixel Rate
25.60 GPixel/s
14.43 GPixel/s
Texture Rate
89.60 GTexel/s
36.08 GTexel/s
FP32 (TFLOPS)
2.867 TFLOPS
1,154.6 GFLOPS
FP64 (TFLOPS)
716.8 GFLOPS (1:4)
36.08 GFLOPS (1:32)
Power
TDP
200 W
45 W
TDP (W)
200
45
-77.5%
Suggested PSU
550 W
—
Power Connectors
2x 6-pin
None
Architecture
Architecture
GCN 1.0
Maxwell
GPU Name
Tahiti
GM107
Generation
Southern Islands
(HD 7900)
GeForce 800M
Process Size
28 nm
28 nm
Transistors
4,313 million
1,870 million
Die Size
352 mm²
148 mm²
Foundry
TSMC
TSMC
Density
12.3M / mm²
12.6M / mm²
API Support
DirectX
12 (11_1)
12 (11_0)
OpenGL
4.6
4.6
Vulkan
1.2.170
1.4
OpenCL
2.1 (1.2)
3.0
CUDA
—
5.0
Shader Model
6.5 (5.1)
6.7 (5.1)
Physical
Slot Width
Dual-slot
IGP
Length
278 mm
10.9 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 x16
Other
Launch Price
449 USD
—
Production
End-of-life
End-of-life
Predecessor
Northern Islands
GeForce 700M
Successor
Sea Islands
GeForce 900M