GPU Comparison
RADEON
AMD Radeon HD 8870M
CORE STATE
Venus
VRAM
2 GB
CLOCK SPEED
775 MHz
TDP
—
BUS WIDTH
128 bit
ARCHITECTURE
GCN 1.0
PROCESS
28 nm
LAUNCH DATE
2013
VS
GEFORCE
GeForce 840M
CORE STATE
GM108S
VRAM
2 GB
CLOCK SPEED
1124 MHz
TDP
33 W
BUS WIDTH
64 bit
ARCHITECTURE
Maxwell
PROCESS
28 nm
LAUNCH DATE
2014
PERFORMANCE BENCHMARKS
geekbench_opencl
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
HD 8870M
840M
Core Specs
Shading Units
640
384
-40.0%
Shaders
640
384
-40.0%
TMUs
40
16
-60.0%
ROPs
16
8
-50.0%
Compute Units
10
—
Clocks
Base Clock
725 MHz
1029 MHz
Boost Clock
775 MHz
1124 MHz
Memory Clock
1125 MHz
4.5 Gbps effective
1001 MHz
2 Gbps effective
Memory
Memory Size
2 GB
2 GB
VRAM (MB)
2,048
2,048
0.0%
Memory Type
GDDR5
DDR3
Memory Bus
128 bit
64 bit
Bandwidth
72.00 GB/s
16.02 GB/s
Cache
L1 Cache
16 KB (per CU)
64 KB (per SMM)
L2 Cache
256 KB
1024 KB
Performance
Pixel Rate
12.40 GPixel/s
8.992 GPixel/s
Texture Rate
31.00 GTexel/s
17.98 GTexel/s
FP32 (TFLOPS)
992.0 GFLOPS
863.2 GFLOPS
FP64 (TFLOPS)
62.00 GFLOPS (1:16)
26.98 GFLOPS (1:32)
Power
TDP
—
33 W
TDP (W)
—
33
Power Connectors
—
None
Architecture
Architecture
GCN 1.0
Maxwell
GPU Name
Venus
GM108S
Generation
Solar System
(HD 8800M)
GeForce 800M
Process Size
28 nm
28 nm
Transistors
1,500 million
1,020 million
Die Size
123 mm²
77 mm²
Foundry
TSMC
TSMC
Density
12.2M / mm²
13.2M / 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
—
IGP
Outputs
—
Portable Device Dependent
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x8
Other
Production
End-of-life
End-of-life
Predecessor
London
GeForce 700M
Successor
Gem System
GeForce 900M