NVIDIA GeForce 945M vs ATI Mobility Radeon HD 3870 X2

NVIDIA GeForce 945M
ATI Mobility Radeon HD 3870 X2

General info

Comparison of GeForce 945M and Mobility Radeon HD 3870 X2 architecture, market type and release date.
Place in performance rating
 
Architecture
Maxwell
 
TeraScale
Code name
GM107
 
M88
Type
Laptop
 
Laptop
Release date
27 October 2015
 
1 September 2008

Technical specs

GeForce 945M and Mobility Radeon HD 3870 X2's general performance parameters such as number of shaders, GPU core clock, manufacturing process, texturing and calculation speed. These parameters indirectly speak of GeForce 945M and Mobility Radeon HD 3870 X2's performance, but for precise assessment you have to consider its benchmark and gaming test results.
Pipelines
640
 
320
Core clock speed
928 MHz
 
660 MHz
Boost Clock
1020 MHz
 
no data
Transistor count
1,870 million
 
666 million
Manufacturing process technology
28 nm
 
55 nm
Power consumption (TDP)
75 Watt
 
110 Watt
Texture fill rate
40.80
 
10.56
Floating-point performance
953.9 gflops
 
2x 422.4 gflops

Compatibility, dimensions and requirements

Information on GeForce 945M and Mobility Radeon HD 3870 X2 compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For notebook video cards it's notebook size, connection slot and bus, if the video card is inserted into a slot instead of being soldered to the notebook motherboard.
Laptop size
medium sized
 
large
Bus support
PCI Express 3.0
 
no data
Interface
MXM-B (3.0)
 
PCIe 2.0 x16
Supplementary power connectors
None
 
no data

Memory

Parameters of memory installed on GeForce 945M and Mobility Radeon HD 3870 X2: its type, size, bus, clock and resulting bandwidth. Note that GPUs integrated into processors don't have dedicated memory and use a shared part of system RAM.
Memory type
DDR3
 
GDDR3
Maximum RAM amount
2 GB
 
512 MB
Memory bus width
128 Bit
 
256 Bit
Memory clock speed
1800 MHz
 
1700 MHz
Memory bandwidth
28.8 GB/s
 
54.4 GB/s
Shared memory
-
 
-

Video outputs and ports

Types and number of video connectors present on GeForce 945M and Mobility Radeon HD 3870 X2.
Display Connectors
No outputs
 
No outputs

Technologies

Technological solutions and APIs supported by GeForce 945M and Mobility Radeon HD 3870 X2. You'll probably need this information if you need some particular technology for your purposes.
GPU Boost
+
 
no data
Optimus
+
 
-
GameWorks
+
 
-
CUDA
+
 
-
GeForce Experience
+
 
no data

API support

APIs supported by GeForce 945M and Mobility Radeon HD 3870 X2, sometimes including their particular versions.
DirectX
12 (11_0)
 
10.1 (10_1)
OpenGL
4.5
 
3.3

Benchmark performance

Non-gaming benchmarks performance of GeForce 945M and Mobility Radeon HD 3870 X2. Note that overall benchmark performance is measured in points in 0-100 range.

Overall benchmark performance

GeForce 945M 4.76 +125.6%
ATI Mobility HD 3870 X2 2.11

3DMark Vantage Performance

GeForce 945M 13507 +95.9%
ATI Mobility HD 3870 X2 6895

Mining hashrates

Cryptocurrency mining performance of GeForce 945M and Mobility Radeon HD 3870 X2. Usually measured in megahashes per second.
Bitcoin / BTC (SHA256)
107 Mh/s
 
no data

Gaming performance

Let's see how good GeForce 945M and Mobility Radeon HD 3870 X2 are for gaming. Particular gaming benchmark results are measured in FPS.

Advantages of NVIDIA GeForce 945M

125.6% faster (about 2.5 times) in synthetic tests
Much newer (27 October 2015 vs 1 September 2008)
More pipelines (640 vs 320)
Finer manufacturing process technology (28 vs 55 nm)
Less power hungry (75 vs 110 watts)
GPU Boost 2.0 (increases NVIDIA GPU voltage and frequency when there's a temperature headroom. Similar to AMD PowerTune)
Optimus (lowers energy usage by automatically switching between integrated and discrete NVIDIA GPU. Similar to AMD Enduro)
PhysX (hardware acceleration of physical simulation engine named PhysX)
CUDA (Compute Unified Device Architecture - an API for video card computing power usage in tasks different from 3D graphics processing. Can be used for physics simulation for instance)
GeForce Experience (software suite built to manage NVIDIA GPU parameters, and to record and stream game video)
Optimus Support
NVIDIAGameWorksSupport

Advantages of ATI Mobility Radeon HD 3870 X2

Wider memory bus (256 vs 128 bit)
Higher memory bandwidth (54.4 vs 28.8 GB/s)

So, 945M or Mobility HD 3870 X2?

Judging by the results of synthetic and gaming tests, Technical City recommends NVIDIA GeForce 945M.
Should you still have questions on choice between GeForce 945M and Mobility Radeon HD 3870 X2, ask them in Comments section, and we shall answer.

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NVIDIA GeForce 945M
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