GeForce 945M vs GTX 660

Place in performance ranking	404	574
Place by popularity	69	not in top-100
Cost-effectiveness evaluation	2.36	2.62
Architecture	Kepler (2012−2018)	Maxwell (2014−2018)
GPU code name	GK106	GM107
Market segment	Desktop	Laptop
Release date	6 September 2012 (11 years ago)	12 March 2015 (9 years ago)
Launch price (MSRP)	$229	no data
Current price	$172 (0.8x MSRP)	$163

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

GeForce 945M has 11% better value for money than GTX 660.

Detailed specifications

General performance parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. These parameters indirectly speak of performance, but for precise assessment you have to consider their benchmark and gaming test results. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores	960	512
CUDA cores	960	no data
Core clock speed	980 MHz	928 MHz
Boost clock speed	1033 MHz	1045 MHz
Number of transistors	2,540 million	1,870 million
Manufacturing process technology	28 nm	28 nm
Power consumption (TDP)	140 Watt	75 Watt
Texture fill rate	78.4 billion/sec	40.80
Floating-point performance	1,981 gflops	953.9 gflops

Form factor & compatibility

Information on GeForce GTX 660 and GeForce 945M compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop video cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility). 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	no data	medium sized
Bus support	PCI Express 3.0	PCI Express 3.0
Interface	PCIe 3.0 x16	MXM-B (3.0)
Length	9.5" (24.1 cm)	no data
Height	4.376" (11.1 cm)	no data
Width	2-slot	no data
Supplementary power connectors	One 6-pin	None
SLI options	+	no data

VRAM capacity and type

Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.

Memory type	GDDR5	DDR3
Maximum RAM amount	2 GB	4 GB
Memory bus width	192-bit GDDR5	128 Bit
Memory clock speed	6.0 GB/s	2000 MHz
Memory bandwidth	144.2 GB/s	28.8 GB/s
Shared memory	no data	-

Connectivity and outputs

Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.

Display Connectors	One Dual Link DVI-I, One Dual Link DVI-D, One HDMI, One DisplayPort	No outputs
Multi monitor support	4 displays	no data
HDMI	+	no data
HDCP	+	no data
Maximum VGA resolution	2048x1536	no data
Audio input for HDMI	Internal	no data

Supported technologies

Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.

3D Blu-Ray	+	no data
3D Gaming	+	no data
3D Vision	+	no data
GPU Boost	no data	2.0
Optimus	no data	+
GameWorks	no data	+

API compatibility

List of supported graphics and general-purpose computing APIs, including their specific versions.

DirectX	12 (11_0)	12 (11_0)
Shader Model	5.1	5.1
OpenGL	4.3	4.5
OpenCL	1.2	1.2
Vulkan	1.1.126	1.1.126
CUDA	+	+

Synthetic benchmark performance

Non-gaming benchmark performance comparison. The combined score is measured on a 0-100 point scale.

Combined synthetic benchmark score

This is our combined benchmark performance score. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

GTX 660 10.33
+89.5%

GeForce 945M 5.45

GTX 660 outperforms 945M by 90% based on our aggregated benchmark results.

Passmark

This is the most ubiquitous GPU benchmark, part of Passmark PerformanceTest suite. It gives the graphics card a thorough evaluation under various types of load, providing four separate benchmarks for Direct3D versions 9, 10, 11 and 12 (the last being done in 4K resolution if possible), and few more tests engaging DirectCompute capabilities.

Benchmark coverage: 25%

GTX 660 3998
+89.7%

GeForce 945M 2108

GTX 660 outperforms 945M by 90% in Passmark.

3DMark Fire Strike Graphics

Fire Strike is a DirectX 11 benchmark for gaming PCs. It features two separate tests displaying a fight between a humanoid and a fiery creature made of lava. Using 1920x1080 resolution, Fire Strike shows off some realistic graphics and is quite taxing on hardware.

Benchmark coverage: 14%

GTX 660 5040
+76.8%

GeForce 945M 2850

GTX 660 outperforms 945M by 77% in 3DMark Fire Strike Graphics.

GeekBench 5 OpenCL

Geekbench 5 is a widespread graphics card benchmark combined from 11 different test scenarios. All these scenarios rely on direct usage of GPU's processing power, no 3D rendering is involved. This variation uses OpenCL API by Khronos Group.

Benchmark coverage: 9%

GTX 660 11272
+39.2%

GeForce 945M 8099

GTX 660 outperforms 945M by 39% in GeekBench 5 OpenCL.