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标题: 威盛 Nano X2 1.2+GHz vs 英特尔 Atom 1.8GHz(CPU2000) [打印本页]

作者: Edison 时间: 2011-7-31 00:03
标题: 威盛 Nano X2 1.2+GHz vs 英特尔 Atom 1.8GHz(CPU2000)
IA Nano X2 Raises the Bar in Performance per Watt CPUs
      This product is available fully ROHS-compliant.

The VIA Nano X2 dual core processor delivers almost a 40% increase in  performance compared to Intel Atom dual core processors in the 13W TDP range. Previously Intel Atom processors relied on dual core and hyper threading to compete with the VIA Nano architecture, but with the release of the VIA Nano X2, VIA Nano’s microarchitecture demonstrates its superior design for higher performance.

In this white paper prepared by Scott Gardner, president and principal analyst of Advantage Engineering LLC, the VIA Nano X2 1.2+GHz CPU is benchmarked against the Intel Atom D525 using SPEC 2000 CPU scores. Even though the Atom operates at a 50% higher base frequency, the VIA Nano X2 scores almost 40% higher. The Spec CPU2000 test suite is a group of system applications that have well-documented characteristics and its benchmark scores are more transparent than consumer-orientated ones, as every application is compiled from source code.

Single Thread Performance Comparison (SPECfp2000)

Single Thread Performance Comparison (SPECint2000)

Dual Thread Performance Comparison

To learn more how the VIA Nano X2 delivers better performance in the same low power TDP as the Intel Atom, download the report here:http://www.via.com.tw/en/downloa ... itepaper_201107.pdf

作者: Edison 时间: 2011-7-31 00:05
This whitepaper compares VIA NanoTM X2 U4300 (1.2+GHz) to Intel® AtomTM Processor D525 (1.8GHz). Both CPUs operate below 13 watts, but VIA’s CPU uses Adaptive OverclockingTM power management to bring the clock rate to over 1.4GHz while maximizing the performance within the 13-watt power envelope.

Any power comparisons are complicated by system issues. For instance, the Atom D525 TDP includes power consumed by the memory controller. However, the entire VIA VX900 chipset consumes less than 4 watts, so this system partitioning issue shouldn’t be a factor in the cooling requirements for the CPU or a major factor in total system power. Note that the average power of the D-series Atom may be much higher than Nano, since this Atom family does not include Enhanced Intel Speedstep® Technology and will never shift into lower P-States to reduce power.

作者: elisha 时间: 2011-7-31 01:54
记得nano也是20W级别的u了，还在跟atom比性能的啊，比了好几年了吧

作者: Edison 时间: 2011-7-31 01:56

elisha 发表于 2011-7-31 01:54
记得nano也是20W级别的u了，还在跟atom比性能的啊，比了好几年了吧

测试使用的 Nano X2 是 13 瓦的水平。

作者: elisha 时间: 2011-7-31 02:00
应该是45nm的功劳

作者: yangyong353 时间: 2011-7-31 10:18
擦，管理员换头像了

作者: FENG950 时间: 2011-7-31 13:23
两U的功耗不一样啊。别说都是13w，ATOM那13w带显卡的，显卡占了大部分功耗，VIA平台能省掉这部分功耗么？

作者: elisha 时间: 2011-7-31 15:00
对了，这是对“ICC劣化VIA”说法活生生的打脸

作者: xp200798 时间: 2011-8-1 00:13
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作者: Edison 时间: 2011-8-1 00:25

elisha 发表于 2011-7-31 15:00
对了，这是对“ICC劣化VIA”说法活生生的打脸

VIA 的 pdf 里有提及针对 ICC 的选择性优化而做了一些针对性的措施。

作者: 花泥 时间: 2011-8-1 01:44
跑个pi看看

作者: Edison 时间: 2011-8-1 02:55
york 不敢给我玩 :(

作者: garou 时间: 2011-8-1 07:58
一来市场上基本买不到，二来比atom贵～

作者: acqwer 时间: 2011-8-1 10:02
本帖最后由 acqwer 于 2011-8-1 10:05 编辑

Edison 发表于 2011-7-31 01:56
测试使用的 Nano X2 是 13 瓦的水平。

D525的13w是带整个北桥的，和只有CPU的Nano不能比吧。

而且图上给出的int_rate，D525只开了2个线程，开4个线程，D525得分可是超过了Nano X2。

作者: potomac 时间: 2011-8-1 11:04
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作者: Edison 时间: 2011-8-1 11:43

acqwer 发表于 2011-8-1 10:02
D525的13w是带整个北桥的，和只有CPU的Nano不能比吧。

而且图上给出的int_rate，D525只开了2个线程， ...

http://www.viatech.com.cn/cn/dow ... paper_cn_201107.pdf

依照里面的 CPU2000 Speed 测试结果，Atom 开关 HT 对测试结果的影响几乎可以忽略不计。

你有 ATOM 开关 HT 跑 CPU2000 ratio 的测试结果吗？

作者: acqwer 时间: 2011-8-1 11:47
本帖最后由 acqwer 于 2011-8-1 11:50 编辑

Edison 发表于 2011-8-1 11:43
http://www.viatech.com.cn/cn/dow ... paper_cn_201107.pdf

...

PDF中不是有吗

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