ATI Radeon HD 4250 Spesifikasi

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The AMD ATI Radeon HD 4250 (sometimes also ATI
Mobility Radeon HD 4250 called) is an onboard (shared
Memory) graphics chip in the RS880M chipset. It is based
on the HD 3400 graphics core and features the UVD 2
video engine to decode HD videos. Compared to the HD
4200, the 4250 offers a similar performance, but the
power consumption could be a bit better.
Compared to the old HD 3200, the 4250 supports DirectX
10.1 and features the UVD2 video decoder.
The UVD 2 video engine is able to decode HD videos (H.264
and VC-1 in all stages, MPEG2 only IDCT) and allows the
fluent playback of HD videos (e.g. Blu-ray) with a relative low
CPU utilization(called Avivo HD). The UVD 2 in the HD 4250
supports the decoding of two video stream and therefore
got a full Blu-Ray support.
The graphics core of the HD 4250 stems from the Mobility
Radeon HD 3400 series and is therefore DirectX 10.1
capable. Because of the missing graphics memory, the
performance of the card is a bit lower than of the HD 34x0.
Theroretically, dedicated memory chips can be directly added
tothe chip, making it a dedicated graphics card (called
sideport). Because of pricing it is unclear if any manufacturer
will add memory to the chip.
The 3D performance is heavily depending on the used
processor. With a fast Phenom II CPU for example less
demanding games like Left 4 Dead or Starcraft 2 were
playable in low settings and resolutions. With a slow V-
Series CPU however, only old games like Doom 3 or Quake 4
should be playable. Compared to older onboad graphic chips
(e.g., GMA 4500MHD), the HD 4250 is much faster. The
new Intel HD Graphics in the Core ix Arrandale CPUs, offers
a similar performance, but the driver support by AMD should
be better.
The mobile Radeon HD 4250 should be identical to the
desktop version (desktop minimal higher clock rates),
although faster processors used in desktop systems may
lead to better benchmarks.
Manufacturer ATI
Radeon HD
4000 Series Radeon HD 4350 80@600MHz
Radeon HD 4270 40@590MHz
Radeon HD 4250 40@500MHz
Radeon HD 4200 40@500MHz
Radeon HD 4225 40@380MHz
Radeon HD 4100 40@350MHz
Codename RS880M
Pipelines 40 - unified
Core Speed * 500 MHz
Shader Speed * 500 MHz
Memory Speed *
Memory Bus
Width
Memory Type
Max. Amount of
Memory 512 MB
Shared Memory yes
shared memory
DirectX DirectX 10.1, Shader 4.0
technology 55 nm
Features Avivo HD (UVD2), Hybrid Graphics Technology, PCI-E 2.0,
Vari-Bright (Bildschirmhelligkeit automtisch anpassen), HDCP
support, Display Cache
Notebook Size small and light
Date of
Announcement 01.05.2010
* The specified clock rates are only guidelines for the
manufacturer and can be altered by them.