AMD Radeon R9 390 vs NVIDIA GeForce GTX 660 Ti

Compare AMD Radeon R9 390 8 GB vs NVIDIA GeForce GTX 660 Ti 3 GB, specs and GPU benchmark score. Which is the better graphics card for the money?

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Specifications
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Benchmark Score

Overall Score

General gaming and workstation score

1919 points

65% significantly better overall score

1159 points

Flux Core frame rate

Volumetric ray casting test, a computationally expensive method of rendering high-quality scenes

44 FPS

18 FPS significantly higher Flux Core frame rate

27 FPS

Electron frame rate

Randomly generated noise sphere test

28 FPS

13 FPS significantly higher Electron frame rate

16 FPS

City frame rate

Procedurally generated city scene with voxel rendering

39 FPS

21 FPS significantly higher City frame rate

18 FPS

Clouds frame rate

Real-time noise calculation and ray marching test

15 FPS

3 FPS slightly higher Clouds frame rate

13 FPS

Free GPU Benchmark

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Other Benchmarks

3DMark Graphics score

High-end graphics benchmark

3950 points

141% significantly higher 3DMark Graphics score

1634 points

Geekbench 5 (OpenCL) score

OpenCL compute benchmark

46328 points

216% significantly higher Geekbench 5 (OpenCL) score

14647 points

Geekbench 5 (Vulkan) score

Vulkan compute benchmark

49594 points

240% significantly higher Geekbench 5 (Vulkan) score

14555 points

Geekbench 6 (OpenCL) score

OpenCL compute benchmark

43704 points

185% significantly higher Geekbench 6 (OpenCL) score

15295 points

Geekbench 6 (Vulkan) score

Vulkan compute benchmark

51251 points

217% significantly higher Geekbench 6 (Vulkan) score

16140 points

Specifications

Core Clock Speed

Nominal chip frequency

1000 MHz

9% slightly higher core clock speed

915 MHz

Boost Clock Speed

Higher turbo frequency when power conditions are met

1000 MHz

2% slightly higher boost clock speed

980 MHz

Memory

Onboard memory size for textures and vertices

8 GiB

166% significantly more memory

3 GiB

Memory Bus Width

Number of parallel lines to the memory chips

512 Bit

166% significantly larger memory bus width

192 Bit

Memory Bandwidth

Data transfer speed between GPU core and memory

384 GB/s

166% significantly higher memory bandwidth

144.2 GB/s

TDP

Thermal Design Power: Measure of heat generated by the GPU

275 W

150 W

83% significantly lower TDP

Pixel Rate

Number of pixels that can be rendered per second

64 Gigapixels/s

133% significantly higher pixel rate

27.44 Gigapixels/s

Texture Rate

Number of textured pixels that can be rendered per second

160 Gigatexels/s

45% significantly higher texture rate

109.8 Gigatexels/s

Floating Point Performance

Raw number of floating point operations per second

5.12 TFLOPS

94% significantly better floating point performance

2.63 TFLOPS

Shading Units

Number of processors dedicated to shader processing

2560

90% significantly more shading units

1344

Texture Mapping Units

Number of processors dedicated to applying textures

160

42% many more texture mapping units

112

Render Output Processors

Number of processors dedicated to final pixel rendering

166% significantly more render output processors

Other details

Rank

Ranking in the hardwareDB database

215th of 586

254th of 586

Family

The product line

Radeon R9 300 Series

Release date

The official date of release of this chip

2015 June

Memory Type

The type of memory used by this chip

GDDR5

DirectX Support

Maximum version of DirectX supported

12.0

11.0

OpenGL Support

Maximum version of OpenGL supported

4.5

Radeon R9 390 vs GeForce GTX 660 Ti specs and performance

For gaming, the Radeon R9 390 graphics card is better than the GeForce GTX 660 Ti in our tests.

The Radeon R9 390 has a slightly higher core clock speed. This is the frequency at which the graphics core is running at. While not necessarily an indicator of overall performance, this metric can be useful when comparing two GPUs based on the same architecture. In addition, the Radeon R9 390 also has a slightly higher boost clock speed. The boost clock speed is the frequency that the GPU core can reach if the temperature is low enough. The allows for higher performance in certain scenarios.

Next up, in terms of GPU memory, the Radeon R9 390 has significantly more memory with 8 GiB of memory compared to 3 GiB. Memory size doesn't directly affect performance, but too little memory will certainly degrade gaming performance.

In addition, the GeForce GTX 660 Ti has a significantly lower TDP at 150 W when compared to the Radeon R9 390 at 275 W. This is not a measure of performance, but rather the amount of heat generated by the chip when running at its highest speed.

In conclusion, all specs and GPU benchmarks considered, will recommend the Radeon R9 390 over the GeForce GTX 660 Ti.