Notebookcheck

PowerVR GX6450

Imagination PowerVR GX6450

De Imagination Technologies PowerVR GXA6450 is een snelle mobile graphics-configuratie voor smartphones en tablets en kan gevonden worden in ARM-SoC's als de Apple A8 (iPhone 6 en iPhone 6 Plus). De chip is verkrijgbaar sinds het derde kwartaal van 2014 en is één van de snelste GPU's in zijn klasse op het moment van introductie.

Architectuur en Prestaties

De GPU is gebaseerd op de PowerVR Series 6XT (Rogue) Unified Shader-architectuur en integreert vier clusters met elk twee TMU's en 32 FP32-ALU's. Daarom is de theoretische FP32-rekenkracht (full precision) in verhouding tot de kloksnelheid identiek aan die van de voorgaande G6430 (ook 4 clusters) aangetroffen in de Apple A7. Dankzij de bijkomende dedicated FP16-ALU's is de - eveneens belangrijke - FP16-performance (half precision) aanzienlijk verbeterd.

In de iPhone 6 zou de GPU geklokt moeten zijn aan ongeveer 450 MHz, wat neerkomt op zo'n 115 GFLOPS (FP32). Vergeleken met de andere mobile graphics-configuraties overtreft de GX6450 de Qualcomm Adreno 330 (Snapdragon 800/801). Met uitzondering van Nvidia's minder zuinige tablet-chip Tegra K1 en zijn grotere neefje GX6650, is de GX6450 één van de snelste mobile GPU's van 2014. Zelfs de meest geavanceerde games en hoge schermresoluties worden probleemloos afgehandeld. De GPU ondersteunt onder andere OpenGL 3.x/4.x, OpenGL ES 3.0 en DirectX 10.

Energieverbruik

Dankzij het geavanceerde 20-nanometer-proces en de relatief lage kloksnelheid biedt de implementatie van de GXA6450 in Apple's A8 een erg hoge energie-efficiëntie. Anderzijds heeft de GPU een betrekkelijk "uitgespreide" architectuur die veel transistoren en een grote chip vereist (ongeveer 19 mm² in 20 nm).

FabrikantImagination
PowerVR Series 6XT (Rogue) Serie
PowerVR GXA6850 256 @ 0.45 GHz128 bit
PowerVR GX6450 128 @ 0.45 GHz64 bit
PowerVR GX6250 64 @ 0.7 GHz64 bit
CodenaamRogue
ArchitectuurPowerVR Rogue
Pipelines128 - verenigd
Core-snelheid450 (?) MHz
Geheugenbusbreedte64 bit
Gedeeld geheugennee
DirectXDirectX 10
technologie20 nm
FaciliteitenOpenGL 3.x, 4.x, OpenGL ES 3.0
Aangekondigde datum09.09.2014
Link naar fabrikanthttp://www.imgtec.com/powervr/series6xt....
CPU in PowerVR GX6450GPU Base SpeedGPU Boost / Turbo
Apple A82 x 1400 MHz? MHz? MHz

Benchmarks

3DMark - 3DMark Ice Storm Unlimited Graphics
min: 22509     gem: 23756     mediaan: 23937 (3%)     max: 25254 Points
GFXBench (DX / GLBenchmark) 2.7
GFXBench 2.7 T-Rex HD Onscreen C24Z16 +
GFXBench (DX / GLBenchmark) 2.7 - GFXBench 2.7 T-Rex HD Onscreen C24Z16
min: 37     gem: 47.1     mediaan: 51.9 (2%)     max: 52.4 fps
GFXBench T-Rex HD Offscreen C24Z16 +
GFXBench (DX / GLBenchmark) 2.7 - GFXBench T-Rex HD Offscreen C24Z16
min: 42.6     gem: 44.6     mediaan: 44.8 (0%)     max: 47.8 fps
GFXBench 3.0 - GFXBench 3.0 Manhattan
min: 15.3     gem: 23.7     mediaan: 24.5 (7%)     max: 30.6 fps
GFXBench 3.0 - GFXBench 3.0 Manhattan Offscreen
min: 17.8     gem: 19.1     mediaan: 18.5 (1%)     max: 21.5 fps
GFXBench - GFXBench 5.0 Aztec Ruins Normal Tier Offscreen
6.6 fps (1%)
Basemark X 1.1 - Basemark X 1.1 High Quality
min: 15572     gem: 16055     mediaan: 16055 (36%)     max: 16538 Points
PassMark PerformanceTest Mobile V1 - PerformanceTest Mobile 2D Graphics Tests
min: 2320     gem: 2579     mediaan: 2609 (3%)     max: 2809 Points
PassMark PerformanceTest Mobile V1 - PerformanceTest Mobile 3D Graphics Tests
min: 1060     gem: 1679     mediaan: 1984 (4%)     max: 1992 Points
- Benchmarkresultaten voor deze videokaart
- Gemiddelde benchmarkresultaten voor deze videokaart
* Smaller numbers mean a higher performance

Game Benchmarks

De volgende benchmarks zijn afgeleid van onze laptop-testrapporten. De prestaties variëren afhankelijk van het gebruikte grafische geheugen, kloksnelheid, processor, systeeminstellingen, drivers en besturingssysteem. De resultaten zijn daarom niet noodzakelijk representatief voor alle laptops met deze GPU. Voor meer gedetailleerde informatie over de benchmarkresultaten, klik op het fps-aantal.

League of Legends: Wild Rift

League of Legends: Wild Rift

2020
lage
59  fps    + Vergelijk
» Met alle geteste laptops speelbaar met lage instellingen.

Voor meer games die mogelijk speelbaar zijn of voor een lijst van alle games en videokaarten, bezoek onze Gaming List

v1.17
log 16. 05:27:13

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#191 return log +0s ... 0.242s

Notebook-testrapporten met PowerVR GX6450 grafische kaart

Apple iPad Mini 4: Apple A8, 7.90", 0.3 kg
  Testrapport » Kort testrapport Apple iPad Mini 4 Tablet

Apple iPhone 6: Apple A8, 4.70", 0.1 kg
  Testrapport » Testrapport Apple iPhone 6 Smartphone

Apple iPhone 6 Plus: Apple A8, 5.50", 0.2 kg
  Testrapport » Testrapport Apple iPhone 6 Plus Smartphone

Apple iPad Mini 4: Apple A8, 7.90", 0.3 kg
  Extern testrapport » Apple iPad Mini 4

Apple iPhone 6: Apple A8, 4.70", 0.1 kg
  Extern testrapport » Apple iPhone 6

Apple iPhone 6 Plus: Apple A8, 5.50", 0.2 kg
  Extern testrapport » Apple iPhone 6 Plus

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Klasse 3

UHD Graphics 770
A12Z Bionic GPU *
A12X Bionic GPU *
Adreno 730 *
A15 GPU 5-Core *
Mali-G710 MP10 *
A15 GPU 4-Core *
A14 Bionic GPU *
Mali-G78 MP24 *
Mali-G78 MP22 *
A13 Bionic GPU *
A12 Bionic GPU *
Mali-G78 MP20 *
Mali-G78 MP14 *
A11 Bionic GPU *
A10X Fusion GPU *
A9X / PowerVR GT7xxx
Tegra X1 Maxwell GPU

Klasse 4

A10 Fusion GPU
Mali-G77 MP11 *
Mali-G76 MP16 *
Adreno 642 *
Mali-G76 MP12 *
Mali-G76 MP10 *
Mali-G57 MP5 *
Adreno 540 *
Mali-G72 MP18 *
Mali-G71 MP20 *
Mali-G72 MP12 *
Mali-G71 MP8
PowerVR GM9446
A9 / PowerVR GT7600
Mali-T880 MP12
Mali-G76 MP4 *
Mali-G71 MP2 *
Adreno 430
Mali-G72 MP3 *
Mali-G68 MP4 *
Mali-G52 MP6 *
Mali-G68 MP2 *
Mali-T760 MP6
Mali-T880 MP2
Adreno 620 *
Mali-G57 MP4 *
Mali-G57 MP1 *

Klasse 5

Adreno 619L *
Adreno 616 *
Mali-G51 MP4 *
Adreno 612 *
Adreno 512 *
PowerVR GX6250
Mali-T628 MP6
Mali-T760 MP4
Mali-T628 MP4
Adreno 509 *
Adreno 508 *
Adreno 506 *
GE8322 / IMG8322 *
Adreno 505 *
Adreno 504 *
Mali-T860 MP2
Mali-T830 MP3
Mali-T604 MP4
Adreno 405 *
Mali-T830 MP2

Klasse 6

Mali-T624
Mali-T760 MP2
PowerVR GE8100 *
Mali-T720 MP4
Mali-450 MP4
Mali-T830 MP1
SGX543MP3 *
SGX544MP2 *
Mali-T720 MP2
Adreno 308
Adreno 306
Adreno 305
Adreno 304
Mali-T720
GC7000UL
Adreno 225 *
GC4000 *
Mali-400 MP4 *
VideoCore-IV *
Adreno 220 *
Mali-400 MP2 *
Mali-400 MP *
SGX540 *
Adreno 205 *
Adreno 203 *
GC800 *
SGX535
SGX531
SGX530
Adreno 200 *
Mali-200 *

* Benaderende positie van de videokaart

> Overzichten en testrapporten over laptops en mobieltjes > FAQ / Techniek > Vergelijking van Video Kaarten > Imagination PowerVR GX6450
Klaus Hinum (Update: 2014-12-10)