GeForce 8600M GT vs GeForce 840A
We compared two Mobile platform GPUs: 512MB VRAM GeForce 8600M GT and 2GB VRAM GeForce 840A to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
GeForce 8600M GT 's Advantages
Larger VRAM bandwidth (22.40GB/s vs 16.02GB/s)
Lower TDP (20W vs 33W)
GeForce 840A 's Advantages
Released 6 years and 10 months late
Boost Clock1124MHz
More VRAM (2GB vs 512GB)
352 additional rendering cores
Score
Benchmark
FP32 (float)
GeForce 8600M GT
61
GeForce 840A
+1314%
863
Graphics Card
May 2007
Release Date
Mar 2014
GeForce 8M
Generation
GeForce 800A
Mobile
Type
Mobile
MXM-II
Bus Interface
PCIe 3.0 x8
Clock Speeds
-
Base Clock
1029 MHz
-
Boost Clock
1124 MHz
700 MHz
Memory Clock
1001 MHz
Memory
512MB
Memory Size
2GB
GDDR3
Memory Type
DDR3
128bit
Memory Bus
64bit
22.40GB/s
Bandwidth
16.02GB/s
Render Config
4
SM Count
-
32
Shading Units
384
16
TMUs
16
8
ROPs
8
-
L1 Cache
64 KB (per SMM)
32 KB
L2 Cache
1024 KB
Theoretical Performance
3.800 GPixel/s
Pixel Rate
8.992 GPixel/s
7.600 GTexel/s
Texture Rate
17.98 GTexel/s
60.80 GFLOPS
FP32 (float)
863.2 GFLOPS
-
FP64 (double)
26.98 GFLOPS
Board Design
20W
TDP
33W
No outputs
Outputs
No outputs
Graphics Processor
G84
GPU Name
GM108
NB8P-GS
GPU Variant
-
Tesla
Architecture
Maxwell
TSMC
Foundry
TSMC
80 nm
Process Size
28 nm
0.289 billion
Transistors
Unknown
169 mm²
Die Size
Unknown
Graphics Features
11.1 (10_0)
DirectX
12 (11_0)
3.3
OpenGL
4.6
1.1
OpenCL
3.0
N/A
Vulkan
1.3
1.1
CUDA
5.0
4.0
Shader Model
5.1
