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PowerVR GX6450

Imagination PowerVR GX6450

The Imagination Technologies PowerVR GX6450 is a fast mobile graphics solution for smartphones and tablets, which can be found in ARM SoCs such as the Apple A8 (iPhone 6 and iPhone 6 Plus). The chip is available since Q3/2014 and of one of the fastest solutions in its class at the time of introduction.

Architecture and Performance

The GPU is based on the PowerVR Series 6XT (Rogue) Unified Shader architecture and integrates four clusters with two TMUs and 32 FP32-ALUs each. Therefore, the theoretical FP32 (full precision) compute performance per clock is identical to the previous G6430 (also 4 clusters) found in the Apple A7. Thanks to additional dedicated FP16-ALUs, however, the also important FP16 (half precision) performance has been greatly improved.

In the iPhone 6, the GPU should be clocked at around 450 MHz, delivering about 115 GLOPS (FP32). Compared to other mobile graphics solutions, the GX6450 outperforms the Qualcomm Adreno 330 (Snapdragon 800/801) and matches the more recent Adreno 420 (Snapdragon 805). Except for Nvidia's power hungry tablet chip Tegra K1 and its bigger cousin GX6650, the GX6450 is one of the fastest mobile GPUs in late 2014. Even the most advanced games and high resolution displays are handled without any problems. Among others, the GPU supports OpenGL 3.x/4.x, OpenGL ES 3.0 as well as DirectX 10.

Power Consumption

Thanks to the advanced 20-nanometer process and the relatively low clock rate, the GX6450 implementation in Apple's A8 offers a very high energy efficiency. On the other hand, the GPU has a comparatively "wide" architecture requirering a lot of transistors and die size (19 mm² in 20 nm).

PowerVR Series 6XT (Rogue) Series

PowerVR GXA6850 compare 256 @ 0.45 GHz128 Bit
PowerVR GX6450 128 @ 0.45 GHz64 Bit
PowerVR GX6250 compare 64 @ 0.7 GHz64 Bit
ArchitecturePowerVR Rogue
Pipelines128 - unified
Core Speed450 (?) MHz
Memory Bus Width64 Bit
Shared Memoryno
APIDirectX 10, OpenGL 3.x, 4.x, OpenGL ES 3.0
technology20 nm
FeaturesOpenGL 3.x, 4.x, OpenGL ES 3.0
Date of Announcement09.09.2014
Link to Manufacturer
CPU in PowerVR GX6450GPU Base SpeedGPU Boost / Turbo
Apple A82 x 1400 MHz? MHz? MHz


3DMark - 3DMark Ice Storm Unlimited Graphics
min: 22509     avg: 23756     median: 23937 (3%)     max: 25254 Points
GFXBench 3.0 - GFXBench 3.0 Manhattan Offscreen
min: 17.8     avg: 19.1     median: 18.5 (1%)     max: 21.5 fps
GFXBench (DX / GLBenchmark) 2.7
GFXBench T-Rex HD Offscreen C24Z16 +
GFXBench (DX / GLBenchmark) 2.7 - GFXBench T-Rex HD Offscreen C24Z16
min: 42.6     avg: 44.6     median: 44.8 (0%)     max: 47.8 fps
Basemark X 1.1 - Basemark X 1.1 High Quality
min: 15572     avg: 16055     median: 16055 (36%)     max: 16538 Points
PassMark PerformanceTest Mobile V1 - PerformanceTest Mobile V1 2D Graphics Tests
min: 2320     avg: 2579     median: 2609 (3%)     max: 2809 Points
PassMark PerformanceTest Mobile V1 - PerformanceTest Mobile V1 3D Graphics Tests
min: 1060     avg: 1679     median: 1984 (3%)     max: 1992 Points
- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card
* Smaller numbers mean a higher performance

Game Benchmarks

The following benchmarks stem from our benchmarks of review laptops. The performance depends on the used graphics memory, clock rate, processor, system settings, drivers, and operating systems. So the results don't have to be representative for all laptops with this GPU. For detailed information on the benchmark results, click on the fps number.

League of Legends: Wild Rift

League of Legends: Wild Rift

59  fps    + Compare
» With all tested laptops playable in detail settings low.
League of Legends: Wild Rift59
< 30 fps
< 60 fps
< 120 fps
≥ 120 fps


For more games that might be playable and a list of all games and graphics cards visit our Gaming List

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show all (including archived), 2024, 2023
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Playable games for each graphics card and their average FPS results.

Class 3

UHD Graphics 32EUs
UHD Graphics 750

Class 4

Class 5

Class 6

* Approximate position of the graphics adapter