GeForce GT 640 Rev. 2 vs GT 440

Place in the ranking	889	720
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.08	0.19
Power efficiency	2.13	5.01
Architecture	Fermi (2010−2014)	Kepler 2.0 (2013−2015)
GPU code name	GF108	GK208
Market segment	Desktop	Desktop
Release date	1 February 2011 (13 years ago)	29 May 2013 (11 years ago)
Launch price (MSRP)	$79	$89

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

GT 640 Rev. 2 has 138% better value for money than GT 440.

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	96	384
Core clock speed	810 MHz	1046 MHz
Number of transistors	585 million	915 million
Manufacturing process technology	40 nm	28 nm
Power consumption (TDP)	65 Watt	49 Watt
Maximum GPU temperature	98 °C	no data
Texture fill rate	12.96	33.47
Floating-point processing power	0.311 TFLOPS	0.8033 TFLOPS
ROPs	4	8
TMUs	16	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).

Bus support	PCI-E 2.0 x 16	no data
Interface	PCIe 2.0 x16	PCIe 2.0 x8
Length	145 mm	145 mm
Height	4.376" (11.1 cm)	no data
Width	1-slot	1-slot
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	DDR3	GDDR5
Maximum RAM amount	512 MB GDDR5 or 1 GB	1 GB
Standard memory config per GPU	1 GB GDDR5 or 2 GB	no data
Memory bus width	128 Bit	64 Bit
Memory clock speed	1600 MHz (GDDR5) or 900 MHz (DDR3)	1252 MHz
Memory bandwidth	28.8 (DDR3) – 51.2 (GDDR5)	40.06 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	HDMIVGADual Link DVI	1x DVI, 1x HDMI, 1x VGA
Multi monitor support	+	no data
HDMI	+	+
Maximum VGA resolution	2048x1536	no data
Audio input for HDMI	Internal	no data

API compatibility

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

DirectX	12 (11_0)	12 (11_0)
Shader Model	5.1	5.1
OpenGL	4.2	4.6
OpenCL	1.1	1.2
Vulkan	N/A	1.1.126
CUDA	+	3.5

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	2.00	3.55
Recency	1 February 2011	29 May 2013
Maximum RAM amount	512 MB GDDR5 or 1 GB	1 GB
Chip lithography	40 nm	28 nm
Power consumption (TDP)	65 Watt	49 Watt

GT 440 has a 51100% higher maximum VRAM amount.

GT 640 Rev. 2, on the other hand, has a 77.5% higher aggregate performance score, an age advantage of 2 years, a 42.9% more advanced lithography process, and 32.7% lower power consumption.

The GeForce GT 640 Rev. 2 is our recommended choice as it beats the GeForce GT 440 in performance tests.

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