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GPU Comparison
NVIDIA GeForce GT 645M vs NVIDIA GeForce 305M
NVIDIA GeForce GT 645M vs NVIDIA GeForce 305M
VS
NVIDIA GeForce GT 645M
NVIDIA GeForce 305M
We compared two Mobile platform GPUs: 2GB VRAM GeForce GT 645M and 512MB VRAM GeForce 305M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GT 645M 's Advantages
Released 2 years and 9 months late
Larger VRAM bandwidth (28.80GB/s vs 11.20GB/s)
368 additional rendering cores
NVIDIA GeForce 305M 's Advantages
Lower TDP (14W vs 32W)
Score
Benchmark
FP32 (float)
GeForce GT 645M
+1370%
0.544 TFLOPS
GeForce 305M
0.037 TFLOPS
GeForce GT 645M
VS
GeForce 305M
Graphics Card
Oct 2012
Release Date
Jan 2010
GeForce 600M
Generation
GeForce 300M
Mobile
Type
Mobile
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
900 MHz
Memory Clock
700 MHz
Memory
2GB
Memory Size
512MB
DDR3
Memory Type
GDDR3
128bit
Memory Bus
64bit
28.80GB/s
Bandwidth
11.20GB/s
Render Config
-
SM Count
2
-
Compute Units
-
384
Shading Units
16
32
TMUs
8
16
ROPs
4
-
Tensor Cores
-
-
RT Cores
-
16 KB (per SMX)
L1 Cache
-
256 KB
L2 Cache
32 KB
Theoretical Performance
5.672 GPixel/s
Pixel Rate
2.100 GPixel/s
22.69 GTexel/s
Texture Rate
4.200 GTexel/s
-
FP16 (half)
-
544.5 GFLOPS
FP32 (float)
36.80 GFLOPS
22.69 GFLOPS
FP64 (double)
-
Graphics Processor
GK107
GPU Name
GT218
N13P-GS
GPU Variant
N11M-LP1
Kepler
Architecture
Tesla 2.0
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
1.27 billion
Transistors
0.26 billion
118 mm²
Die Size
57 mm²
Board Design
32W
TDP
14W
-
Suggested PSU
-
No outputs
Outputs
No outputs
-
Power Connectors
-
Graphics Features
12 (11_0)
DirectX
11.1 (10_1)
4.6
OpenGL
3.3
3.0
OpenCL
1.1
1.1
Vulkan
N/A
3.0
CUDA
1.2
5.1
Shader Model
4.1
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