AMD A8-3850 CPU & GPU 性能预览（anandtech）

Edison

http://www.anandtech.com/show/44 ... rformance-preview/2

CPU Performance: Pretty Much an Athlon II X4As we already found in our look at the mobile Llano, the A8 isn't impressive as a general purpose x86 microprocessor. In general the chip is somewhat faster than the Athlon II X4 635 and I'd say it performs more like a 645 based on the numbers I've seen here. Again, nothing to be impressed by but if you're building a value gaming PC it may not matter.
Note that heavily threaded applications actually favor the A8-3850 to the Core i3 2100 (its most likely target based on pricing rumors) thanks to its four cores. They may not be as efficient as the i3's cores, but you sure do have more of them. We have been discussing this tradeoff with AMD for quite a bit over the past couple of years. You lose out on single threaded performance but you do gain better performance in heavily threaded workloads. I had assumed that turbo would partially solve this with Llano but 2.9GHz is going to be the fastest SKU AMD offers and it doesn't ship with any turbo enabled.

Edison

GPU Performance: Like a Radeon HD 6450I grabbed some of our most recent GPU testbed data for the Radeon HD 6450 and the Radeon HD 5570, the latter which is architecturally most similar to the Sumo GPU in the A8-3850. If you're wondering how mu**aring memory bandwidth between the GPU and four CPU cores impacts performance, it's pretty significant:

Overall the Radeon HD 6620G in AMD's A8-3850 APU performs a lot like a discrete Radeon HD 6450 card. For a GPU that ships integrated with all high end A8 APUs, I really can't complain. The real question is how does it stack up when compared directly to Sandy Bridge, which brings us to our next page...

Edison

Llano vs. Sandy Bridge: Finally, Acceptable Processor GraphicsOn average the A8-3850 is 56% faster than the fastest Sandy Bridge available: the Core i5 2600K. If we look at peak performance in games like Modern Warfare 2, Llano delivers over twice the frame rate of Sandy Bridge. This is what processor graphics should look like. While I believe Sandy Bridge was a good start for integrated GPU performance, Llano is my ideal for 2011.
Games that are more CPU bound however do show Llano's weakness. Both Dragon Age and Starcraft II have Sandy Bridge either outperforming or coming very close to Llano in frame rates. Those are most definitely the exception rather than the rule however, for the most part AMD is able to deliver entry level discrete GPU performance with Llano.

Edison

Final WordsThere are still a number of unanswered questions about Llano on the desktop. In the coming weeks we'll be looking at HTPC performance, power consumption and hopefully we'll be able to figure out what the deal is with overclocking AMD's new mainstream APUs.
The question of processor graphics performance is open and closed. Llano offers what I'd expect to be the bare minimum from any processor offering a real performance oriented GPU. All of our bench suite is playable on Llano and its actually possible to drive up image quality settings without sacrificing playability. If you're looking to build an entry level gaming PC, Llano is most likely going to be on your hit list this year.

It took AMD spending half the transistors of Llano on its GPU to deliver the sort of performance we've been asking for from integrated graphics for over a decade, the question I have is whether or not Intel is willing to make a similar sort of move in its architectures.

Ivy Bridge has already been decided upon, it'll be faster but not a significant upheaval in performance. However Intel does have a history of building upon ideas that AMD introduced before their time (e.g. IMC, x86-64, Fusion), with Llano we may be given a peak at what's to come in the future.

gtx5

居然比X4 640强{sweat:]

hl1979

Llano能有这么强？如果是推土机的核心整合进去的话恐怕应该更强。

gdmk

没L3，玩游戏要比肥龙2差不少。

asdfjkl

Edison 发表于 2011-6-14 12:29
GPU Performance: Like a Radeon HD 6450I grabbed some of our most recent GPU testbed data for the Rad ...

一块GT220，就可以把将要发布桌面最高端的APU里面的GPU就搞定了；从图上看是这样的。
A8-3850里面CPU的性能基本上和x4 635差不多，因此定价就基本上：
AMD Althon II X4 635 + GT220.
前者基本600块；后者200多；所以最顶级的APU A8-3850，定价800比较合理；大家觉得这个推理思路合理吗？
（理性讨论）

66666

吹了半天，连2年前的GT220都打不过，CPU更是给I3爆出浆

kxsq

还是ATi给力

inSeek

这个顶级型号的APU不可能800块的吧，保守预计1500

heavenboy

测试的内存是ddr-1333,估计高频内存对显卡性能会有极大的改善

gtx5

heavenboy 发表于 2011-6-14 14:09
测试的内存是ddr-1333,估计高频内存对显卡性能会有极大的改善

amd的内存带宽很渣
所以超频30%.显卡性能可以提高40%

amd```fans

cpu性能符合预期，本来就是x4 6xx L2翻倍版，游戏被i3完秒无悬念。
gpu比之前泛a吹的要渣很多。

asdfjkl

inSeek 发表于 2011-6-14 14:05
这个顶级型号的APU不可能800块的吧，保守预计1500

要是这价格的话，够坑爹了；

我买个600的AMD CPU + 900的GPU；游戏性能把这不知道秒到哪里去了。不管你这顶级APU怎么超。

yellowfly

看看混交一块6670成绩如何~~这才是杀手锏啊

66666

以交火的稳定性和兼容性，尤其这种非对等交火，能有多大意义？

luckissy

{sweat:]比GT220还稍微差点..

yangyong353

早说了，也就是GT220的性能，泛A都不信
卖700合适，卖800还要考虑主板价格，不如上I3+独显了