GPU Comparison
GEFORCE
NVIDIA 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
VS
GEFORCE
GeForce GTX 580M
CORE STATE
GF114
VRAM
2 GB
CLOCK SPEED
—
TDP
100 W
BUS WIDTH
256 bit
ARCHITECTURE
Fermi 2.0
PROCESS
40 nm
LAUNCH DATE
2011
PERFORMANCE BENCHMARKS
geekbench_opencl
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
840M
GTX 580M
Core Specs
Shading Units
384
384
0.0%
Shaders
384
384
0.0%
TMUs
16
64
+300.0%
ROPs
8
32
+300.0%
SM Count
—
8
Clocks
Base Clock
1029 MHz
—
Boost Clock
1124 MHz
—
GPU Clock
—
620 MHz
Shader Clock
—
1240 MHz
Memory Clock
1001 MHz
2 Gbps effective
750 MHz
3 Gbps effective
Memory
Memory Size
2 GB
2 GB
VRAM (MB)
2,048
2,048
0.0%
Memory Type
DDR3
GDDR5
Memory Bus
64 bit
256 bit
Bandwidth
16.02 GB/s
96.00 GB/s
Cache
L1 Cache
64 KB (per SMM)
64 KB (per SM)
L2 Cache
1024 KB
512 KB
Performance
Pixel Rate
8.992 GPixel/s
9.920 GPixel/s
Texture Rate
17.98 GTexel/s
39.68 GTexel/s
FP32 (TFLOPS)
863.2 GFLOPS
952.3 GFLOPS
FP64 (TFLOPS)
26.98 GFLOPS (1:32)
79.36 GFLOPS (1:12)
Power
TDP
33 W
100 W
TDP (W)
33
100
+203.0%
Power Connectors
None
None
Architecture
Architecture
Maxwell
Fermi 2.0
GPU Name
GM108S
GF114
Generation
GeForce 800M
GeForce 500M
Process Size
28 nm
40 nm
Transistors
1,020 million
1,950 million
Die Size
77 mm²
332 mm²
Foundry
TSMC
TSMC
Density
13.2M / mm²
5.9M / mm²
API Support
DirectX
12 (11_0)
12 (11_0)
OpenGL
4.6
4.6
Vulkan
1.4
—
OpenCL
3.0
1.1
CUDA
5.0
2.1
Shader Model
6.7 (5.1)
5.1
Physical
Slot Width
IGP
MXM Module
Outputs
Portable Device Dependent
Portable Device Dependent
Bus Interface
PCIe 3.0 x8
MXM-B (3.0)
Other
Production
End-of-life
End-of-life
Predecessor
GeForce 700M
GeForce 400M
Successor
GeForce 900M
GeForce 600M