GeForce GTX 780M vs GeForce 845M
We compared two Mobile platform GPUs: 4GB VRAM GeForce GTX 780M and 2GB VRAM GeForce 845M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
GeForce GTX 780M 's Advantages
More VRAM (4GB vs 2GB)
Larger VRAM bandwidth (160.0GB/s vs 40.10GB/s)
1152 additional rendering cores
GeForce 845M 's Advantages
Released 2 years and 3 months late
Boost Clock has increased by 48% (1176MHz vs 797MHz)
Lower TDP (33W vs 122W)
Score
Benchmark
FP32 (float)
GeForce GTX 780M
+171%
2448
GeForce 845M
903
Graphics Card
May 2013
Release Date
Aug 2015
GeForce 700M
Generation
GeForce 800M
Mobile
Type
Mobile
MXM-B (3.0)
Bus Interface
PCIe 3.0 x8
Clock Speeds
771 MHz
Base Clock
1071 MHz
797 MHz
Boost Clock
1176 MHz
1250 MHz
Memory Clock
1253 MHz
Memory
4GB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
64bit
160.0GB/s
Bandwidth
40.10GB/s
Render Config
1536
Shading Units
384
128
TMUs
32
32
ROPs
16
16 KB (per SMX)
L1 Cache
64 KB (per SMM)
512 KB
L2 Cache
1024 KB
Theoretical Performance
25.50 GPixel/s
Pixel Rate
18.82 GPixel/s
102.0 GTexel/s
Texture Rate
37.63 GTexel/s
2.448 TFLOPS
FP32 (float)
903.2 GFLOPS
102.0 GFLOPS
FP64 (double)
28.22 GFLOPS
Board Design
122W
TDP
33W
No outputs
Outputs
No outputs
None
Power Connectors
-
Graphics Processor
GK104
GPU Name
GM108
N14E-GTX-A2
GPU Variant
-
Kepler
Architecture
Maxwell
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
3.54 billion
Transistors
Unknown
294 mm²
Die Size
Unknown
Graphics Features
12 (11_0)
DirectX
12 (11_0)
4.6
OpenGL
4.6
3.0
OpenCL
3.0
1.1
Vulkan
1.3
3.0
CUDA
5.0
5.1
Shader Model
5.1
