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 550 Ti
CORE STATE
GF116
VRAM
1024 MB
CLOCK SPEED
—
TDP
116 W
BUS WIDTH
192 bit
ARCHITECTURE
Fermi 2.0
PROCESS
40 nm
LAUNCH DATE
2011
PERFORMANCE BENCHMARKS
geekbench_opencl
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
840M
GTX 550 Ti
Core Specs
Shading Units
384
192
-50.0%
Shaders
384
192
-50.0%
TMUs
16
32
+100.0%
ROPs
8
24
+200.0%
SM Count
—
4
Clocks
Base Clock
1029 MHz
—
Boost Clock
1124 MHz
—
GPU Clock
—
900 MHz
Shader Clock
—
1800 MHz
Memory Clock
1001 MHz
2 Gbps effective
1026 MHz
4.1 Gbps effective
Memory
Memory Size
2 GB
1024 MB
VRAM (MB)
2,048
1,024
-50.0%
Memory Type
DDR3
GDDR5
Memory Bus
64 bit
192 bit
Bandwidth
16.02 GB/s
98.50 GB/s
Cache
L1 Cache
64 KB (per SMM)
64 KB (per SM)
L2 Cache
1024 KB
384 KB
Performance
Pixel Rate
8.992 GPixel/s
7.200 GPixel/s
Texture Rate
17.98 GTexel/s
28.80 GTexel/s
FP32 (TFLOPS)
863.2 GFLOPS
691.2 GFLOPS
FP64 (TFLOPS)
26.98 GFLOPS (1:32)
57.60 GFLOPS (1:12)
Power
TDP
33 W
116 W
TDP (W)
33
116
+251.5%
Suggested PSU
—
300 W
Power Connectors
None
1x 6-pin
Architecture
Architecture
Maxwell
Fermi 2.0
GPU Name
GM108S
GF116
Generation
GeForce 800M
GeForce 500
Process Size
28 nm
40 nm
Transistors
1,020 million
1,170 million
Die Size
77 mm²
238 mm²
Foundry
TSMC
TSMC
Density
13.2M / mm²
4.9M / 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
Dual-slot
Length
—
210 mm
8.3 inches
Outputs
Portable Device Dependent
2x DVI1x mini-HDMI 1.3a
Bus Interface
PCIe 3.0 x8
PCIe 2.0 x16
Other
Launch Price
—
149 USD
Production
End-of-life
End-of-life
Predecessor
GeForce 700M
GeForce 400
Successor
GeForce 900M
GeForce 600