GeForce GTX 660M Mac Edition vs Radeon Pro 5500 XT

Place in the ranking	250	966
Place by popularity	not in top-100	not in top-100
Power efficiency	12.11	2.17
Architecture	RDNA 1.0 (2019−2020)	Kepler (2012−2018)
GPU code name	Navi 14	GK107
Market segment	Workstation	Laptop
Release date	4 August 2020 (4 years ago)	1 April 2013 (11 years ago)

Detailed specifications

General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores	1536	384
Core clock speed	1187 MHz	950 MHz
Boost clock speed	1757 MHz	no data
Number of transistors	6,400 million	1,270 million
Manufacturing process technology	7 nm	28 nm
Power consumption (TDP)	125 Watt	50 Watt
Texture fill rate	168.7	30.40
Floating-point processing power	5.398 TFLOPS	0.7296 TFLOPS
ROPs	32	16
TMUs	96	32

Form factor & compatibility

Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).

Interface	PCIe 4.0 x8	MXM-B (3.0)
Width	IGP	no data
Supplementary power connectors	None	None

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	GDDR6	GDDR5
Maximum RAM amount	8 GB	512 MB
Memory bus width	128 Bit	128 Bit
Memory clock speed	1750 MHz	1250 MHz
Memory bandwidth	224.0 GB/s	80 GB/s

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

No outputs

API compatibility

List of supported 3D and general-purpose computing APIs, including their specific versions.

DirectX	12 (12_1)	12 (11_0)
Shader Model	6.5	5.1
OpenGL	4.6	4.6
OpenCL	2.0	1.2
Vulkan	1.2	1.1.126
CUDA	-	3.0

Gaming performance

Let's see how good the compared graphics cards are for gaming. Particular gaming benchmark results are measured in FPS.

Pros & cons summary

Performance score	21.71	1.56
Recency	4 August 2020	1 April 2013
Maximum RAM amount	8 GB	512 MB
Chip lithography	7 nm	28 nm
Power consumption (TDP)	125 Watt	50 Watt

Pro 5500 XT has a 1291.7% higher aggregate performance score, an age advantage of 7 years, a 1500% higher maximum VRAM amount, and a 300% more advanced lithography process.

GTX 660M Mac Edition, on the other hand, has 150% lower power consumption.

The Radeon Pro 5500 XT is our recommended choice as it beats the GeForce GTX 660M Mac Edition in performance tests.

Be aware that Radeon Pro 5500 XT is a workstation card while GeForce GTX 660M Mac Edition is a notebook one.

Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.