GeForce GT 640M Mac Edition vs ATI Radeon HD 4550

Place in the ranking	1200	1094
Place by popularity	not in top-100	not in top-100
Power efficiency	1.70	2.27
Architecture	TeraScale (2005−2013)	Kepler (2012−2018)
GPU code name	RV710	GK107
Market segment	Desktop	Laptop
Release date	30 September 2008 (16 years ago)	3 February 2013 (11 years ago)
Launch price (MSRP)	$59	no data

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

no data

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	80	384
Core clock speed	600 MHz	745 MHz
Number of transistors	242 million	1,270 million
Manufacturing process technology	55 nm	28 nm
Power consumption (TDP)	25 Watt	32 Watt
Texture fill rate	4.800	23.84
Floating-point processing power	0.096 TFLOPS	0.5722 TFLOPS
ROPs	4	8
TMUs	8	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 2.0 x16	PCIe 3.0 x16
Length	168 mm	no data
Width	1-slot	no data
Supplementary power connectors	None	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	DDR2	GDDR5
Maximum RAM amount	256 MB	512 MB
Memory bus width	64 Bit	64 Bit
Memory clock speed	655 MHz	1250 MHz
Memory bandwidth	10.48 GB/s	40 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	1x DVI, 1x HDMI, 1x DisplayPort	No outputs
HDMI	+	-

API compatibility

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

DirectX	10.1 (10_1)	12 (11_0)
Shader Model	4.1	5.1
OpenGL	3.3	4.6
OpenCL	1.1	1.2
Vulkan	N/A	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	0.61	1.04
Recency	30 September 2008	3 February 2013
Maximum RAM amount	256 MB	512 MB
Chip lithography	55 nm	28 nm
Power consumption (TDP)	25 Watt	32 Watt

ATI HD 4550 has 28% lower power consumption.

GT 640M Mac Edition, on the other hand, has a 70.5% higher aggregate performance score, an age advantage of 4 years, a 100% higher maximum VRAM amount, and a 96.4% more advanced lithography process.

The GeForce GT 640M Mac Edition is our recommended choice as it beats the Radeon HD 4550 in performance tests.

Be aware that Radeon HD 4550 is a desktop card while GeForce GT 640M 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.