ATI Radeon HD 5550 vs GeForce GT 640M Mac Edition

Place in the ranking	1092	1111
Place by popularity	not in top-100	not in top-100
Power efficiency	2.27	1.73
Architecture	Kepler (2012−2018)	TeraScale 2 (2009−2015)
GPU code name	GK107	Redwood
Market segment	Laptop	Desktop
Release date	3 February 2013 (11 years ago)	9 February 2010 (14 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	384	320
Core clock speed	745 MHz	550 MHz
Number of transistors	1,270 million	627 million
Manufacturing process technology	28 nm	40 nm
Power consumption (TDP)	32 Watt	39 Watt
Texture fill rate	23.84	8.800
Floating-point processing power	0.5722 TFLOPS	0.352 TFLOPS
ROPs	8	8
TMUs	32	16

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 3.0 x16	PCIe 2.0 x16
Length	no data	165 mm
Width	no data	1-slot
Supplementary power connectors	no data	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	GDDR5	GDDR5
Maximum RAM amount	512 MB	2 GB
Memory bus width	64 Bit	128 Bit
Memory clock speed	1250 MHz	800 MHz
Memory bandwidth	40 GB/s	51.2 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	1x DVI, 1x HDMI, 1x VGA
HDMI	-	+

API compatibility

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

DirectX	12 (11_0)	11.2 (11_0)
Shader Model	5.1	5.0
OpenGL	4.6	4.4
OpenCL	1.2	1.2
Vulkan	1.1.126	N/A
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	1.04	0.97
Recency	3 February 2013	9 February 2010
Maximum RAM amount	512 MB	2 GB
Chip lithography	28 nm	40 nm
Power consumption (TDP)	32 Watt	39 Watt

GT 640M Mac Edition has a 7.2% higher aggregate performance score, an age advantage of 2 years, a 42.9% more advanced lithography process, and 21.9% lower power consumption.

ATI HD 5550, on the other hand, has a 300% higher maximum VRAM amount.

Given the minimal performance differences, no clear winner can be declared between GeForce GT 640M Mac Edition and Radeon HD 5550.

Be aware that GeForce GT 640M Mac Edition is a notebook card while Radeon HD 5550 is a desktop one.

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