GeForce GTX 660 Rev. 2 vs Radeon R9 390 X2

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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 2.0 (2013−2017)Kepler (2012−2018)
GPU code nameGrenadaGK104
Market segmentDesktopDesktop
Release date3 September 2015 (9 years ago)13 September 2014 (10 years ago)
Launch price (MSRP)$1,399 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 cores2560960
Core clock speed1000 MHz980 MHz
Boost clock speedno data1032 MHz
Number of transistors6,200 million3,540 million
Manufacturing process technology28 nm28 nm
Power consumption (TDP)580 Watt140 Watt
Texture fill rate160.082.56
Floating-point processing power5.12 TFLOPS1.981 TFLOPS
ROPs6424
TMUs16080

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 x16
Lengthno data241 mm
Width3-slot2-slot
Supplementary power connectors4x 8-pin1x 6-pin

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 amount8 GB2 GB
Memory bus width512 Bit192 Bit
Memory clock speed1350 MHz1502 MHz
Memory bandwidth345.6 GB/s144.2 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 DisplayPort2x DVI, 1x HDMI, 1x DisplayPort
HDMI++

API compatibility

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

DirectX12 (12_0)12 (11_0)
Shader Model6.35.1
OpenGL4.64.6
OpenCL2.01.2
Vulkan1.2.1311.1.126
CUDA-3.0

Pros & cons summary


Recency 3 September 2015 13 September 2014
Maximum RAM amount 8 GB 2 GB
Power consumption (TDP) 580 Watt 140 Watt

R9 390 X2 has an age advantage of 11 months, and a 300% higher maximum VRAM amount.

GTX 660 Rev. 2, on the other hand, has 314.3% lower power consumption.

We couldn't decide between Radeon R9 390 X2 and GeForce GTX 660 Rev. 2. 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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AMD Radeon R9 390 X2
Radeon R9 390 X2
NVIDIA GeForce GTX 660 Rev. 2
GeForce GTX 660 Rev. 2

Comparisons with similar GPUs

We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.

Community ratings

Here you can see the user ratings of the compared graphics cards, as well as rate them yourself.


2.9 31 vote

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3.5 49 votes

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Questions & comments

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