你是否还纠结购买2013MacBookAir时，是应该选Corei5-4250U还是选Corei7-4650U。下面我们就通过AnandTech的对比来分别了解一下它们吧：　　苹果的便携Mac产品通常有3个不同的CPU方案供消费者选择：基本CPU、升级SKU的CPU以及BTO。而对于2013MacBookAir苹果只提供两种选择：标准SKU(Corei5-4250U)以及性能更强的Corei7-4650U。AnandTech此前对2013MacBookAir评测发现，使用Corei5的机型和去年的相比并没有快很多。原因是Corei5CPU的基准频率更低（1.3GHz），TDP也是更低（15Wvs.17W），而共享TDP的部件则增加了（CPU/GPU/PCHvs.CPU/GPU），因此默认的Corei5CPU才无法与去年的相比。　　对于大部分用户来说这个并不是什么大问题。2013MBA配备了速度更快的SSD，显卡和CPU的性能也都更优秀。如果你强调的是设备的便携性，或者希望新机的性能比去年的机型更强，那么它完全已经能够满足你的要求了。BTO升级将基准频率增加至1.7GHz，额外增加1MB的L3高速缓存，涡轮频率也更高。　　升级CPU的成本相对也不高为150美元，基准频率和L3高速缓存最大可以增加30%。现在最明显的问题就是这些会对性能、电池续航以及设备散热产生怎样的影响。AnandTech表示通过一款配备i7-4650U的13英寸MBA，他们可以告诉我们答案：虽然i7-4650U的内存是8GB，但是两个系统的配置基本相同。两个系统的SSD都是三星基于PCIe的解决方案。来源weiphone)
13-07-05·
13-07-05·
13-07-05·
13-07-05·
13-07-05·
13-07-05·Intel Core i5-3427U vs i5-4250U
Core i5-4250U:
More comparisons
Mini Review
Intel Core i5-3427U advantages
Operating frequency of the Core i5-3427U is higher than the frequency of the Intel i5-4250U CPU.
Intel Core i5-4250U advantages
The microprocessor is based on more efficient Haswell core. It is faster by 6% on average than Ivy Bridge CPUs when running at the same frequency.
This CPU has AVX2 and FMA3 instructions. These extensions are not extensively supported by programs yet, but their support should improve in future apps.
The microprocessor is 12% more energy efficient.
i5-3427U vs i5-4250U specifications comparison
The charts below compare the most important Core i5-4250U and Intel i5-3427U features. These characteristics, along with an IPC (instructions per cycle) number, determine how well a CPU performs. The "Number of cores / threads" graph shows the number of cores (darker area). Lighter area on the graph represents the number of additional threads, offered by Hyper-Threading technology. The "Operating frequency" chart uses dark color for base frequency, while lighter area is for extra frequency, provided by Turbo feature. Darker area on the "On-chip cache" graph is for the On-chip L2 cache. Lighter area is for the L3 cache cache. Although the L3 cache cache is usually larger than the On-chip L2 cache, it is always slower.
The number of cores / threads
Higher is better
Operating frequency
43.22.41.60.80
Higher is better
& - Intel Core i5-3427U & & & - Intel Core i5-4250U
On-chip L2 + L3 cache
40003200240016008000
Higher is better
Thermal Design Power
Lower is better
Detailed side by side comparison of Intel Core i5-3427U vs Intel Core i5-4250U specs can be found in the
Pros and Cons summary
Core i5-3427U&Core i5-4250U
General recommendations: Clocked higher
General recommendations: Supports AVX2 / FMA3 instructions, Lower power
Drawbacks: Does not support some instructions, Requires more power
Drawbacks: Operating frequency is lower
Similar processors
Core i5-3427U&Core i5-4250U
Similar processors use the same socket and architecture as i5-3427U and Core i5-4250U, however their performance and other characteristics are a bit different.
Share links
If you found the comparison useful please consider sharing it:
Specifications
Please visit
pages for more detailed specifications of both microprocessors.
&Intel Core i5-3427UIntel Core i5-4250U
Market segmentMobile
ManufacturerIntel
Basic details
Model numberi5-3427Ui5-4250U
CPU part numberAV1CL1
Introduction date&&
CPU features
Core name&&
Platform name&&
Microarchitecture&&
Technology (micron)&
Data width (bits)64
SocketBGA1023BGA1168
Frequency (MHz)18001300
Turbo Frequency (MHz)&&
Clock Multiplier&&
L2 cache (KB)&
L3 cache (KB)3072
Max temperature (&C)&&
TDP (Watt)&&
Multiprocessing&
Instruction set extensions
AES / Advanced Encryption Standard&
AMD64 / EM64T 64-bit technology&
AVX / Advanced Vector Extensions&
AVX2 / Advanced Vector Extensions 2&&
F16C / 16-bit Floating-Point conversion&
FMA3 / 3-operand Fused Multiply-Add&&
SSSE3 / Supplemental SSE3&
Supported technologies
Hyper-Threading&
PowerNow! / Enhanced SpeedStep&
Trusted Execution&&
Turbo Core / Turbo Boost&
Virtualization&
Virus Protection / Execute Disable bit&
Integrated Graphics
GPU Type&&
Graphics tier&&
Microarchitecture&&
Execution units&&
Base frequency (MHz)&&
Maximum frequency (MHz)&&
The number of supported displays&
Integrated Memory Controller(s)
The number of controllers&
Memory channels&
Supported memory&&
Maximum memory bandwidth (GB/s)&
Rows with different specifications or features are highlighted.
For detailed specifications of "Intel Core i5-3427U" or "Intel Core i5-4250U" parts please click on the links in the table header.
Comments (0)
(c) Copyright 2003 - 2017 Gennadiy Shvets当前位置 & &
& 胶水大法显神威：单芯片Haswell长相很奇葩
胶水大法显神威：单芯片Haswell长相很奇葩
13:14:12&&作者：
编辑：上方文Q &&)
让小伙伴们也看看：
阅读更多：
好文共享：
文章观点支持
当前平均分：0(0 次打分)
[04-04][04-04][04-03][04-03][04-03][04-02][04-02][04-02][04-02][04-02]
登录驱动之家
没有帐号？
用合作网站帐户直接登录}