NVIDIA GeForce GTX 660 vs Intel Iris Xe

Compare NVIDIA GeForce GTX 660 3 GB vs Intel Iris Xe, 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

8 %

10 %

25% slightly better overall score

Flux Core frame rate

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

18 FPS

24 FPS

5 FPS slightly higher Flux Core frame rate

Electron frame rate

Randomly generated noise sphere test

11 FPS

14 FPS

3 FPS significantly higher Electron frame rate

City frame rate

Procedurally generated city scene with voxel rendering

12 FPS

15 FPS

3 FPS slightly higher City frame rate

Clouds frame rate

Real-time noise calculation and ray marching test

9 FPS

10 FPS

1 FPS slightly higher Clouds frame rate

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Other Benchmarks

3DMark Graphics score

High-end graphics benchmark

1312

8% slightly higher 3DMark Graphics score

1210

Blender score

Cycles Render (Samples per minute)

124.24

26% slightly higher Blender score

98.45

Geekbench 5 (OpenCL) score

OpenCL compute benchmark

11381

14184

24% slightly higher Geekbench 5 (OpenCL) score

Geekbench 5 (Vulkan) score

Vulkan compute benchmark

10693

14105

31% slightly higher Geekbench 5 (Vulkan) score

Geekbench 6 (OpenCL) score

OpenCL compute benchmark

11123

12162

9% slightly higher Geekbench 6 (OpenCL) score

Geekbench 6 (Vulkan) score

Vulkan compute benchmark

11691

16777

43% significantly higher Geekbench 6 (Vulkan) score

Specifications

Core Clock Speed

Nominal chip frequency

980 MHz

226% significantly higher core clock speed

300 MHz

Boost Clock Speed

Higher turbo frequency when power conditions are met

1032 MHz

1100 MHz

6% slightly higher boost clock speed

TDP

Thermal Design Power: Measure of heat generated by the GPU

140 W

15 W

833% significantly lower TDP

Pixel Rate

Number of pixels that can be rendered per second

20.64 Gigapixels/s

56% significantly higher pixel rate

13.2 Gigapixels/s

Texture Rate

Number of textured pixels that can be rendered per second

82.56 Gigatexels/s

212% significantly higher texture rate

26.4 Gigatexels/s

Floating Point Performance

Raw number of floating point operations per second

1.98 TFLOPS

8.45 TFLOPS

326% significantly better floating point performance

Shading Units

Number of processors dedicated to shader processing

960

150% significantly more shading units

384

Texture Mapping Units

Number of processors dedicated to applying textures

233% significantly more texture mapping units

Render Output Processors

Number of processors dedicated to final pixel rendering

100% significantly more render output processors

Other details

Rank

Ranking in the hardwareDB database

215th of 549

198th of 549

Release date

The official date of release of this chip

September 2020

Memory Type

The type of memory used by this chip

GDDR5

DDR4

DirectX Support

Maximum version of DirectX supported

11.0

12.0

OpenGL Support

Maximum version of OpenGL supported

4.5

4.6

GeForce GTX 660 vs Iris Xe benchmarks

According to the hardwareDB Benchmark, the Iris Xe GPU is faster than the GeForce GTX 660 in gaming.

In our comparison, the GeForce GTX 660 has a significantly 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. Despite this, the Iris Xe has a slightly higher boost clock speed: the maximum frequency the chip can reach if power delivery and thermals allow.

In addition, the Iris Xe has a significantly lower TDP at 15 W when compared to the GeForce GTX 660 at 140 W. Heat output doesn't match power consumption directly but, it's a good estimate.

According to the results of the hardwareDB benchmark utility, the Iris Xe is faster than the GeForce GTX 660.