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标题: AMD A8-3850 CPU & GPU 性能预览(anandtech) [打印本页]

作者: Edison    时间: 2011-6-14 12:29
标题: AMD A8-3850 CPU & GPU 性能预览(anandtech)
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.


作者: Edison    时间: 2011-6-14 12:29
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...

作者: Edison    时间: 2011-6-14 12:30
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.

作者: Edison    时间: 2011-6-14 12:30
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.

作者: gtx5    时间: 2011-6-14 12:39
居然比X4 640强{sweat:]
作者: hl1979    时间: 2011-6-14 12:39
本帖最后由 hl1979 于 2011-6-14 12:40 编辑

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。
作者: gdmk    时间: 2011-6-14 12:42
本帖最后由 gdmk 于 2011-6-14 12:42 编辑

没L3,玩游戏要比肥龙2差不少。
作者: asdfjkl    时间: 2011-6-14 13:17
本帖最后由 asdfjkl 于 2011-6-14 15:31 编辑
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)

作者: 66666    时间: 2011-6-14 13:49
吹了半天,连2年前的GT220都打不过,CPU更是给I3爆出浆


作者: kxsq    时间: 2011-6-14 13:59
还是ATi给力
作者: inSeek    时间: 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
作者: heavenboy    时间: 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
作者: gtx5    时间: 2011-6-14 14:13
本帖最后由 gtx5 于 2011-6-14 14:15 编辑
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%
作者: amd```fans    时间: 2011-6-14 14:20
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。
作者: asdfjkl    时间: 2011-6-14 15:30
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。

作者: yellowfly    时间: 2011-6-14 15:30
看看混交一块6670成绩如何~~这才是杀手锏啊
作者: G70    时间: 2011-6-14 15:50
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作者: 66666    时间: 2011-6-14 15:55
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?
作者: luckissy    时间: 2011-6-14 16:23
{sweat:]比GT220还稍微差点..
作者: yangyong353    时间: 2011-6-14 16:30
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
作者: poppy400    时间: 2011-6-14 16:33
这货到底多少钱啊 800块就搞来玩玩了
作者: Heitai    时间: 2011-6-14 16:42
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作者: Prescott    时间: 2011-6-14 17:07
这个定位低于i3-2100的,应该不会超过1000块
作者: 诧音速    时间: 2011-6-14 17:29
这个标配支持1866内存,支持交火~~~~~~~~~
作者: potomac    时间: 2011-6-14 17:40
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作者: zaknafein    时间: 2011-6-14 18:40
用比四核snb还大的管芯和晶体管堆出这样的性能...
占芯片50%的图形相对20%面积的HD3000没达到性能翻倍
果然160sp以上的部分都是浪费掉的
作者: asdfjkl    时间: 2011-6-14 21:16
Prescott 发表于 2011-6-14 17:07
这个定位低于i3-2100的,应该不会超过1000块

今天帮我哥装机正好用了i3-2100, 780元。

作者: inSeek    时间: 2011-6-14 21:25
回复 asdfjkl 的帖子

你看现在市面上一线的1.6G双核的APU的坑爹价格就知道了...
如果这玩意卖600+500的主板 1100,那现在这1.6G弱到渣的带板子的APU卖多少...

作者: zicfy    时间: 2011-6-14 21:52
网上有些传言(谣言)APU A8-3550P要170$,这个价格不咋给力。不过咱还是等官方定价吧。
作者: lzjery    时间: 2011-6-14 21:58
默认频率就非常出色了,超频之后,性能可以用飙升来形容。
sb i3和gt240准备颤抖吧。


作者: lzjery    时间: 2011-6-14 23:21
官方当初给出的定价是150-170美刀。
普通版150,黑版170。
最终应该也差不多。
定价在SB I3 2100和SB I5 2300之间。
大致在千元左右。估计右的可能性还要大点。
刚出来肯定贵啊,性能给力价格肯定就不给力了。

是不是值得购买,还要看个人需求了。好的是新工艺加上集显方式。能大幅降低整机功耗。
看了测试不比俺现在用的FX5000+3850差啊!功耗则低了许多。
电脑用的多了,性能真就浮云了。现在用笔记本比用台式机的时间还多。每天就看看网页,上上论坛,淘宝,电影。游戏是偶尔玩下。
什么I7,推土机对我真没啥吸引力了。
APU的定位比较和我胃口,从便携移动平台,到HTPC,到集成化台式电脑。都是我目前比较关注的东西。
IPAD玩过,没什么兴趣。安卓PAD系统太不成熟折腾人,就盼着X86 PAD快普及吧。 HTPC本来一直关注离子平台,由于ATOM太过悲剧放弃(工作中接触到双核四线程ATOM,那性能不是杯具就是餐具)。集显平台台式电脑,本来以为785G够用的,实际一试,独显还是拆不下来。

一切还是看实际出来的情况吧。
本人并不迷恋AMD,数一下目前我手上的INTEL平台不比AMD少。五套平台三I两A。关键现在INTEL太坑爹。
作者: gtx5    时间: 2011-6-15 00:18
lzjery 发表于 2011-6-14 21:58
默认频率就非常出色了,超频之后,性能可以用飙升来形容。
sb i3和gt240准备颤抖吧。

内存带宽是apu的弱点
作者: Edison    时间: 2011-6-15 00:25
加钱上高频内存不如上一个独立显卡吧 {titter:]
作者: beer966    时间: 2011-6-15 00:45
zicfy 发表于 2011-6-14 21:52
网上有些传言(谣言)APU A8-3550P要170$,这个价格不咋给力。不过咱还是等官方定价吧。

3550不是本本用的吗?
作者: 茫茫的宇宙    时间: 2011-6-15 01:37
搞个X3 445开核,再买个二手的9600GT,才900元,真的不知道好多少倍。

APU的致命弱点在内存带宽,本来是预想4通道内存的,看AMD的实力...不说下去了。

期待intel ivybridge 48SP 24EU干掉APU A8系列
作者: panjanstoneborg    时间: 2011-6-15 03:16
第一代还是问题多多嘛
nb上频率上不去
dt的igp又不行,看到比什么gt430还差就没什么意思了
应该主攻htpc和oem了,配个6670作cf应该能扳回不少的
作者: 66666    时间: 2011-6-15 05:42
Edison 发表于 2011-6-15 00:25
加钱上高频内存不如上一个独立显卡吧

APU就是谈性价比的东西,现在是某些人拼命强调性能赶上GT240独显,成本价格避而不谈。


作者: amd```fans    时间: 2011-6-15 06:21
66666 发表于 2011-6-15 05:42
APU就是谈性价比的东西,现在是某些人拼命强调性能赶上GT240独显,成本价格避而不谈。

正解。目前anandtech已更新ddr3-1866的分数,相对1333高不少,但不要忘记1866比1333贵很多。





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