XGI XG45 vs GeForce GT 640 OEM Rebrand

Primary details

GPU architecture, market segment, value for money and other general parameters compared.

Place in performance ranking	not rated	not rated
Place by popularity	not in top-100	not in top-100
Architecture	Fermi 2.0 (2010−2014)	XG4 (2003−2005)
GPU code name	GF116	XG45
Market segment	Desktop	Desktop
Release date	24 April 2012 (12 years ago)	no data

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	144	no data
Core clock speed	720 MHz	no data
Number of transistors	1,170 million	no data
Manufacturing process technology	40 nm	110 nm
Power consumption (TDP)	75 Watt	no data
Texture fill rate	17.28	no data
Floating-point performance	414.7 gflops	no data

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	no data
Length	145 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	DDR3	no data
Maximum RAM amount	1536 MB	no data
Memory bus width	192 Bit	no data
Memory clock speed	1600 MHz	no data
Memory bandwidth	38.4 GB/s	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	2x DVI, 1x mini-HDMI	no data
HDMI	+	no data

API compatibility

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

DirectX	12 (11_0)	9.0c
Shader Model	5.1	3.0
OpenGL	4.6	2.1
OpenCL	1.1	N/A
Vulkan	N/A	N/A
CUDA	2.1	no data

Pros & cons summary

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Chip lithography

40 nm

110 nm

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