GeForce GT 645 OEM vs Radeon R7 265X OEM

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Primary details

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

Place in the rankingnot ratednot rated
Place by popularitynot in top-100not in top-100
ArchitectureGCN 1.0 (2012−2020)Fermi 2.0 (2010−2014)
GPU code nameCuracaoGF114
Market segmentDesktopDesktop
Release date12 August 2014 (10 years ago)24 April 2012 (13 years ago)

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 cores1280288
Core clock speed900 MHz776 MHz
Boost clock speed925 MHzno data
Number of transistors2,800 million1,950 million
Manufacturing process technology28 nm40 nm
Power consumption (TDP)150 Watt102 Watt
Texture fill rate74.0037.25
Floating-point processing power2.368 TFLOPS0.894 TFLOPS
ROPs3224
TMUs8048

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).

InterfacePCIe 3.0 x16PCIe 2.0 x16
Length210 mm210 mm
Width2-slot2-slot
Supplementary power connectors1x 6-pinno 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 typeGDDR5GDDR5
Maximum RAM amount2 GB1 GB
Memory bus width256 Bit192 Bit
Memory clock speed1400 MHz957 MHz
Memory bandwidth179.2 GB/s91.87 GB/s

Connectivity and outputs

This section shows the types and number of video connectors on each GPU. The data applies specifically to desktop reference models (for example, NVIDIA’s Founders Edition). OEM partners often modify both the number and types of ports. On notebook GPUs, video‐output options are determined by the laptop’s design rather than the graphics chip itself.

Display Connectors2x DVI, 1x HDMI, 1x DisplayPort2x DVI, 1x mini-HDMI
HDMI++

API and SDK compatibility

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

DirectX12 (11_1)12 (11_0)
Shader Model5.15.1
OpenGL4.64.6
OpenCL1.21.1
Vulkan1.2.131N/A
CUDA-2.1

Pros & cons summary


Recency 12 August 2014 24 April 2012
Maximum RAM amount 2 GB 1 GB
Chip lithography 28 nm 40 nm
Power consumption (TDP) 150 Watt 102 Watt

R7 265X OEM has an age advantage of 2 years, a 100% higher maximum VRAM amount, and a 42.9% more advanced lithography process.

GT 645 OEM, on the other hand, has 47.1% lower power consumption.

We couldn't decide between Radeon R7 265X OEM and GeForce GT 645 OEM. We've got no test results to judge.

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AMD Radeon R7 265X OEM
Radeon R7 265X OEM
NVIDIA GeForce GT 645 OEM
GeForce GT 645 OEM

Other comparisons

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Community ratings

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