NVIDIA GeForce GTX 870M vs NVIDIA B300
GPU Specs Compare
Graphics Card
Release Date
Mar 2014
Sep 2025
Generation
GeForce 800M
Server Blackwell
Type
Mobile
Desktop
Bus Interface
MXM-B (3.0)
PCIe 5.0 x16
Clock Speeds
Base Clock
941 MHz
1665 MHz
Boost Clock
967 MHz
2032 MHz
Memory Clock
1250 MHz
2000 MHz
Memory
Memory Size
3GB
144GB
Memory Type
GDDR5
HBM3e
Memory Bus
192bit
4096bit
Bandwidth
120.0GB/s
4.10TB/s
Render Config
Shading Units
1344
18944
TMUs
112
592
ROPs
24
24
L1 Cache
16 KB (per SMX)
256 KB (per SM)
L2 Cache
384 KB
50 MB
SM Count
-
148
Tensor Cores
-
592
Theoretical Performance
Pixel Rate
27.08 GPixel/s
48.77 GPixel/s
Texture Rate
108.3 GTexel/s
1202.9 GTexel/s
FP32 (float)
2.599 TFLOPS
76.99 TFLOPS
FP64 (double)
108.3 GFLOPS
1202.9 GFLOPS
FP16 (half)
-
1231.8 TFLOPS
Graphics Processor
GPU Name
GK104
GB110
GPU Variant
N15E-GT-A2
-
Architecture
Kepler
Blackwell Ultra
Foundry
TSMC
TSMC
Process Size
28 nm
5 nm
Transistors
3.54 billion
104 billion
Die Size
294 mm²
Unknown
Board Design
TDP
100W
1400W
Outputs
No outputs
No outputs
Power Connectors
None
-
Suggested PSU
-
1800 W
Graphics Features
DirectX
12 (11_0)
N/A
OpenGL
4.6
N/A
OpenCL
3.0
3.0
Vulkan
1.1
N/A
CUDA
3.0
10.3
Shader Model
5.1
N/A