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PowerVR GX6250 vs PowerVR GXA6850

PowerVR GX6250

► remove from comparison Imagination PowerVR GX6250

The PowerVR GX6250 from Imagination Technologies is a mobile graphics card for ARM based SoCs. It is usually used in Android based laptops and smartphones. It was first announced in the MediaTek MT8173 in mid 2014. The performance should be in the higher middle class of mobile GPUs.

The graphics card is part of the series 6XT (Rogue) of GPUs and offers a unified shader architecture with two clusters, two TMUs and 32 FP32-ALUs. The GPU supports OpenGL 3.x/4.x, OpenGL ES 3.x and DirectX 10.

In the MT8173 the GPU is clocked at 700 MHz and therefore the performance should be similar to the Adreno 330. Therefore, even demanding games of 2014 should run fluently.

PowerVR GXA6850

► remove from comparison

The Imagination Technologies PowerVR GXA6850 is a fast mobile graphics solution (mainly) for tablets, which can be found in ARM SoCs such as the Apple A8X (iPad Air 2). 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

In contrast to previous speculations, the A8X integrates an 8-cluster PowerVR Series 6 (Rogue) GXA6850 consisting of two GX6450 GPUs (2x 4 clusters) instead of a single GX6650 (6 clusters). The name GXA6850 has been created by Anandtech, the design may also be called a GX6450MP2.

Each cluster offers four FP16 and two FP32 ALUs, leading to a compute power of about 230 GFLOPS FP32 at 450 MHz (clock rate estimated). The GXA6850 does not only beat the Qualcomm Adreno 420 (Snapdragon 805), but also the Nvidia Tegra K1 by a small margin. Thus, the GXA6850 is one of the fastest tablet GPUs as of 2014 and can handle even the most demanding mobile games in high resolutions. 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 GXA6850 implementation in Apple's A8X 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 (about 38 mm² in 20 nm).

PowerVR GX6250PowerVR GXA6850
ManufacturerImaginationImagination
PowerVR Series 6XT (Rogue) Series
PowerVR GXA6850 256 @ 0.45 GHz128 Bit
PowerVR GX6450 compare 128 @ 0.45 GHz64 Bit
PowerVR GX6250 64 @ 0.7 GHz64 Bit
PowerVR GXA6850 256 @ 0.45 GHz128 Bit
PowerVR GX6450 compare 128 @ 0.45 GHz64 Bit
PowerVR GX6250 64 @ 0.7 GHz64 Bit
CodenameRogueRogue
ArchitecturePowerVR RoguePowerVR Rogue
Pipelines64 - unified256 - unified
Core Speed700 (Boost) MHz450 (?) MHz
Memory Bus Width64 Bit128 Bit
Shared Memorynono
DirectXDirectX 10DirectX 10
technology28 nm20 nm
FeaturesOpenGL 3.x, 4.x, OpenGL ES 3.xOpenGL 3.x, 4.x, OpenGL ES 3.0
Date of Announcement09.09.2014 09.09.2014
Link to Manufacturer Pagehttp://www.imgtec.com/powervr/series6xt....http://www.imgtec.com/powervr/series6xt....
CPU in PowerVR GX6250GPU Base SpeedGPU Boost / Turbo
Mediatek MT81766 x 2100 MHz600 MHz? MHz
Mediatek MT81734 x 2400 MHz? MHz700 MHz
Mediatek MT8173C4 x 2100 MHz? MHz700 MHz
min. - max.600 - ? MHz700 MHz

Benchmarks

3DMark - 3DMark Ice Storm Unlimited Graphics
min: 11719     avg: 14380     median: 14121 (2%)     max: 16690 Points
31542 Points (5%)
3DMark - 3DMark Sling Shot (ES 3.0) Unlimited
min: 796     avg: 932     median: 840 (6%)     max: 1159 Points
2651 Points (19%)
3DMark - 3DMark Sling Shot (ES 3.0) Unlimited Graphics
min: 754     avg: 891     median: 812 (2%)     max: 1108 Points
3474 Points (8%)
3DMark - 3DMark Sling Shot Extreme (ES 3.1) Unlimited
min: 532     avg: 690     median: 612 (6%)     max: 926 Points
2059 Points (21%)
3DMark - 3DMark Sling Shot Extreme (ES 3.1) Unlimited Graphics
min: 506     avg: 614     median: 528 (2%)     max: 809 Points
2377 Points (9%)
GFXBench (DX / GLBenchmark) 2.7
GLBench 2.7 T-Rex HD Offscreen C24Z16 + PowerVR GX6250
GFXBench (DX / GLBenchmark) 2.7 - GLBench 2.7 T-Rex HD Offscreen C24Z16
min: 18     avg: 26.4     median: 27.8 (0%)     max: 33 fps
GLBench 2.7 T-Rex HD Offscreen C24Z16 + PowerVR GXA6850
min: 70.4     avg: 70.4     median: 70.4 (1%)     max: 70.5 fps
GLBench 2.7 T-Rex HD Onscreen C24Z16 + PowerVR GX6250
GFXBench (DX / GLBenchmark) 2.7 - GLBench 2.7 T-Rex HD Onscreen C24Z16
min: 17     avg: 20.2     median: 21 (1%)     max: 23 fps
GLBench 2.7 T-Rex HD Onscreen C24Z16 + PowerVR GXA6850
52.1 fps (2%)
GFXBench 3.0 - GFXBench 3.0 Manhattan Offscreen
min: 8.5     avg: 12.5     median: 14 (2%)     max: 16 fps
min: 32.4     avg: 35     median: 35 (4%)     max: 37.6 fps
GFXBench 3.0 - GFXBench 3.0 Manhattan
min: 6.4     avg: 8.6     median: 8.9 (2%)     max: 9.7 fps
min: 24.5     avg: 25.8     median: 25.8 (7%)     max: 27 fps
GFXBench - GFXBench Car Chase Offscreen
min: 2     avg: 3.5     median: 3.4 (1%)     max: 5.1 fps
GFXBench - GFXBench Car Chase Onscreen
min: 2     avg: 3     median: 3 (1%)     max: 3.9 fps
GFXBench - GFXBench 5.0 Aztec Ruins High Tier Onscreen
6.1 fps (4%)
GFXBench - GFXBench 5.0 Aztec Ruins High Tier Offscreen
5.3 fps (2%)
GFXBench - GFXBench 5.0 Aztec Ruins Normal Tier Onscreen
9.5 fps (5%)
GFXBench - GFXBench 5.0 Aztec Ruins Normal Tier Offscreen
14.2 fps (2%)
Basemark X 1.1 - Basemark X 1.1 High Quality
29502 Points (67%)
Basemark X 1.1 - Basemark X 1.1 Medium Quality
41488 Points (92%)
PassMark PerformanceTest Mobile V1 - PerformanceTest Mobile 2D Graphics Tests
2956 Points (3%)
PassMark PerformanceTest Mobile V1 - PerformanceTest Mobile 3D Graphics Tests
1160 Points (3%)

Average Benchmarks PowerVR GX6250 → 100% n=9

Average Benchmarks PowerVR GXA6850 → 310% n=9

- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card
* Smaller numbers mean a higher performance
1 This benchmark is not used for the average calculation

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.

Dead Trigger 2

Dead Trigger 2

2013
high
100%
PowerVR GX6250:
30 59 ~ 45 fps
Asphalt 8: Airborne

Asphalt 8: Airborne

2013
low
100%
PowerVR GX6250:
30 30 ~ 30 fps
high
100%
PowerVR GX6250:
22 26 ~ 24 fps
Temple Run 2

Temple Run 2

2013
high
100%
PowerVR GX6250:
60  fps

Average Gaming PowerVR GX6250 → 100%

Average Gaming 30-70 fps → 100%

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

Add one or more devices and compare

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> Notebook / Laptop Reviews and News > Benchmarks / Tech > Graphics Card Comparison - Head 2 Head
Redaktion, 2017-09- 8 (Update: 2017-09-11)