Radeon R5 340 OEM vs GeForce GTX 660 OEM

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Primary details

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

Place in the ranking731not rated
Place by popularitynot in top-100not in top-100
Power efficiency1.79no data
ArchitectureKepler (2012−2018)GCN 1.0 (2011−2020)
GPU code nameGK104Oland
Market segmentDesktopDesktop
Release date22 August 2012 (12 years ago)5 May 2015 (9 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 cores1152384
Core clock speed823 MHz730 MHz
Boost clock speed888 MHz780 MHz
Number of transistors3,540 million950 million
Manufacturing process technology28 nm28 nm
Power consumption (TDP)130 Watt65 Watt
Texture fill rate85.2518.72
Floating-point processing power2.046 TFLOPS0.599 TFLOPS
ROPs328
TMUs9624

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 3.0 x8
Length241 mm145 mm
Width2-slot1-slot
Supplementary power connectors1x 6-pinNone

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 Bit64 Bit
Memory clock speed1400 MHz1150 MHz
Memory bandwidth179.2 GB/s36.8 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 Connectors2x DVI, 1x HDMI, 1x DisplayPort1x DVI, 1x DisplayPort
HDMI+-

API compatibility

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

DirectX12 (11_0)12 (11_1)
Shader Model5.15.1
OpenGL4.64.6
OpenCL1.21.2
Vulkan1.1.1261.2.131
CUDA3.0-

Pros & cons summary


Recency 22 August 2012 5 May 2015
Maximum RAM amount 2 GB 1 GB
Power consumption (TDP) 130 Watt 65 Watt

GTX 660 OEM has a 100% higher maximum VRAM amount.

R5 340 OEM, on the other hand, has an age advantage of 2 years, and 100% lower power consumption.

We couldn't decide between GeForce GTX 660 OEM and Radeon R5 340 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 660 OEM
GeForce GTX 660 OEM
AMD Radeon R5 340 OEM
Radeon R5 340 OEM

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Community ratings

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3.8 34 votes

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