GeForce GTX 645 OEM vs GTX 780 Ti

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Primary details

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

Place in the ranking218not rated
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation6.26no data
Power efficiency7.13no data
ArchitectureKepler (2012−2018)Kepler (2012−2018)
GPU code nameGK110BGK106
Market segmentDesktopDesktop
Release date7 November 2013 (10 years ago)22 April 2013 (11 years ago)
Launch price (MSRP)$699 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 cores2880576
Core clock speed875 MHz824 MHz
Boost clock speed928 MHzno data
Number of transistors7,080 million2,540 million
Manufacturing process technology28 nm28 nm
Power consumption (TDP)250 Watt65 Watt
Texture fill rate222.739.55
Floating-point processing power5.345 TFLOPS0.9492 TFLOPS
ROPs4816
TMUs24048

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 supportPCI Express 3.0no data
InterfacePCIe 3.0 x16PCIe 3.0 x16
Length267 mm147 mm
Height4.376" (11.1 cm)no data
Width2-slot1-slot
Supplementary power connectors1x 6-pin + 1x 8-pinNone
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 typeGDDR5GDDR5
Maximum RAM amount3 GB1 GB
Memory bus width384 Bit128 Bit
Memory clock speed7.0 GB/s1000 MHz
Memory bandwidth336 GB/s64 GB/s
Shared memory--

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 ConnectorsOne Dual Link DVI-I, One Dual Link DVI-D, One HDMI, One DisplayPort1x DVI, 1x HDMI, 1x DisplayPort
Multi monitor support4 displaysno data
HDMI++
HDCP+-
Maximum VGA resolution2048x1536no data
Audio input for HDMIInternalno data

Supported technologies

Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.

Blu Ray 3D+-
3D Gaming+-
3D Vision+-
3D Vision Live+-

API compatibility

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

DirectX12 (11_1)12 (11_0)
Shader Model5.15.1
OpenGL4.44.6
OpenCL1.21.2
Vulkan1.1.1261.1.126
CUDA+3.0

Pros & cons summary


Recency 7 November 2013 22 April 2013
Maximum RAM amount 3 GB 1 GB
Power consumption (TDP) 250 Watt 65 Watt

GTX 780 Ti has an age advantage of 6 months, and a 200% higher maximum VRAM amount.

GTX 645 OEM, on the other hand, has 284.6% lower power consumption.

We couldn't decide between GeForce GTX 780 Ti and GeForce GTX 645 OEM. We've got no test results to judge.


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

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NVIDIA GeForce GTX 780 Ti
GeForce GTX 780 Ti
NVIDIA GeForce GTX 645 OEM
GeForce GTX 645 OEM

Comparisons with similar GPUs

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Community ratings

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4 644 votes

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3.8 75 votes

Rate GeForce GTX 645 OEM on a scale of 1 to 5:

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Questions & comments

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