GeForce GT 645 OEM vs GTX 260

Primary details

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

Place in the ranking	744	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.14	no data
Power efficiency	1.21	no data
Architecture	Tesla 2.0 (2007−2013)	Fermi 2.0 (2010−2014)
GPU code name	GT200	GF114
Market segment	Desktop	Desktop
Release date	16 June 2008 (16 years ago)	24 April 2012 (12 years ago)
Launch price (MSRP)	$449	no data

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

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	192	288
Core clock speed	576 MHz	776 MHz
Number of transistors	1,400 million	1,950 million
Manufacturing process technology	65 nm	40 nm
Power consumption (TDP)	182 Watt	102 Watt
Maximum GPU temperature	105 °C	no data
Texture fill rate	36.86	37.25
Floating-point processing power	0.4769 TFLOPS	0.894 TFLOPS
ROPs	28	24
TMUs	64	48

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 2.0 x16
Length	267 mm	210 mm
Height	4.376" (111 mm) (11.1 cm)	no data
Width	2-slot	2-slot
Supplementary power connectors	2x 6-pin	no data
SLI options	+	-

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	GDDR3	GDDR5
Maximum RAM amount	896 MB	1 GB
Memory bus width	448 Bit	192 Bit
Memory clock speed	999 MHz	957 MHz
Memory bandwidth	111.9 GB/s	91.87 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	Dual Link DVIHDTV	2x DVI, 1x mini-HDMI
Multi monitor support	+	no data
HDMI	+	+
Maximum VGA resolution	2048x1536	no data
Audio input for HDMI	S/PDIF	no data

API compatibility

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

DirectX	11.1 (10_0)	12 (11_0)
Shader Model	4.0	5.1
OpenGL	2.1	4.6
OpenCL	1.1	1.1
Vulkan	N/A	N/A
CUDA	+	2.1

Pros & cons summary

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Recency	16 June 2008	24 April 2012
Maximum RAM amount	896 MB	1 GB
Chip lithography	65 nm	40 nm
Power consumption (TDP)	182 Watt	102 Watt

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