性能再度提升！技嘉 GTX670 OC版评测
出处： 泡泡网原创 && 作者:蒋尚文&&
&&& 作为NVIDIA目前次高端的型号，GTX670在硬件配备方面可以看成是GTX680的删节版，但同样搭载了GK104显示核心，显存规格也和GTX680并无二致，这款GTX670的性能应该不会让大家失望。
&&& GTX670采用的GK104核心拥有1344个CUDA核心，112个纹理单元以及32个ROP光栅单元，核心频率915MHz，等效显存频率6008MHz，搭配2GB GDDR5显存，位宽256bit。长篇大论的分析相信大家看得都很累，最后我们将Tahiti与GK104这两颗GPU的所有规格都列出来，进行全方位的对比：
下面就通过数据分析一下架构的特性：
1. GK104的晶体管数比GF110减少了，但流处理器数量达到了三倍，NVIDIA改进架构、提高浮点运算的努力效果显著。但是，同为1536个流处理器，GK104的晶体管数要远大于Cayman核心，这就证明了SIMT还是要比SIMD更消耗晶体管；
2. GTX680的核心与显存频率都创新高，但是TDP却不到200W，这都要归功于它小核心的设计、以及不再使用双倍CUDA频率的作法，NVIDIA控制功耗的作法成效显著；
3. Tahiti的晶体管数是GK104的1.22倍，流处理器数量是1.33倍，这两个数字差距不是很大，N/A双方自DX10时代以来头一次达到了相似的晶体管利用率；
4. 从Cayman到Tahiti，AMD用了1.63倍的晶体管数才让流处理器数量达到了原来的1.33倍；从GF110到GK104，NVIDIA减少了晶体管数量却让流处理器达到原来的三倍；可以看出双方都在向对方的架构靠拢，目的只有一个，就是提高GPU的运算效能；
&&& 通过之前的测试数据来看，AMD的GCN架构相比上代确实提高了GPU的效能。而NVIDIA方面，GTX670的性能也必定远超GTX580。
&&& 在核心面积、晶体管数量、功耗、流处理器数量、显存容量、显存位宽得各方面都不占优势（唯一的优势就是频率）的情况下，GTX670的综合性能是否能够超越HD7970？
提示：试试“← →”可以实现快速翻页
品牌:NVIDIA
接口类型:PCI Express X16 3.0
核心品牌:NVIDIA
核心代号:GK104
NVIDIA芯片:GeForce GTX670
核心频率:1058MHz
显存类型:GDDR5
显存容量:2GB
显存位宽:256bit
显存频率:6008MHz
最大分辨率:
行车视线精品文章推荐索泰GTX670至尊版~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
后面有一粒灯，绿色和红色代表什么意思？为什么我玩战地3中特效帧数还不如以前那块560se，但是感觉非常流畅，什么特效的帧数基本都一样。
按时间排序
灯是供电的提示 你知道木桶效应吧 560se 用你的U可以发挥 但是GTX670 勉强啊 找块好的U给上了
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on Jun 11th, 2012,
Manufacturer:
Introduction
NVIDIA's much talked about Kepler GPU architecture is finally testing waters in the crucial performance market-segment, with the GeForce GTX 670. The new graphics card, as NVIDIA puts it, is built from the DNA of GeForce GTX 680. This launch closely follows that of the GeForce GTX 690, which is the posterboy of the Kepler GPU architecture, and is the fastest graphics card ever made. The GeForce GTX 670 is designed to let NVIDIA capture the US $399 price point, its competitor is meant to be Radeon HD 7950, although its specifications give us hope that the SKU could fry both bigger and smaller fish than that. It could target the Radeon HD 7950, as well as take a shot at scoring a higher price-performance than the much cheaper Radeon HD 7870 GHz Edition.
The GeForce GTX 670 utilizes the same 28 nm GK104 silicon, with one streaming multiprocessor (SMX, amounts for 192 CUDA cores) cut out, resulting in a CUDA core count of 1,344. The GPU clock speeds are also toned down a tiny bit, with 915 MHz core, and 980 MHz GPU Boost frequency, but the memory clock speed (of 6.00 GHz, resulting in 192 GB/s bandwidth) is left untouched. It packs 112 texture memory units (TMUs), and 32 raster operations processors (ROPs). The GeForce GTX 670 retains the entire feature-set of the GTX 680, including 4-way SLI support, and the ability to drive four monitors by a single card (and hence 3D Vision Surround).
GIGABYTE's GTX 670 Windforce OC is a premium GTX 670 implementation. The card uses the exact same PCB as the NVIDIA reference design GTX 680, paired with GIGABYTE's own cooling solution. GIGABYTE has increased clocks of their card by a large amount to exploit their custom design as much as possible.
GeForce GTX 670 Market Segment Analysis
GTX 570Radeon
HD 6970Radeon
HD 7850Radeon
HD 7870GeForce
GTX 580Radeon
HD 7950GeForce
GTX 670GIGABYTE GTX
670 OCRadeon
HD 7970GeForce
GTX 680&Shader Units48015361024128051217921344134420481536&ROPs40323232483232323232&Graphics ProcessorGF110CaymanPitcairnPitcairnGF110TahitiGK104GK104TahitiGK104&Transistors3000M2640M2800M2800M3000M4310M3500M3500M4310M3500M&Memory Size1280 MB2048 MB2048 MB2048 MB1536 MB3072 MB2048 MB2048 MB3072 MB2048 MB&Memory Bus Width320 bit256 bit256 bit256 bit384 bit384 bit256 bit256 bit384 bit256 bit&Core Clock732 MHz880 MHz860 MHz1000 MHz772 MHz800 MHz915 MHz+980 MHz+925 MHz1006 MHz+&Memory Clock950 MHz1375 MHz1200 MHz1200 MHz1002 MHz1250 MHz1502 MHz1502 MHz1375 MHz1502 MHz&Price$290$340$250$330$380$380$400$400$450$500&
1- Introduction & Specifications
2- Packaging & Contents
3- The Card
4- A Closer Look
5- Test Setup
6- Alan Wake
7- Aliens vs. Predator
8- Batman: Arkham City
9- Battlefield 3
10- BattleForge
11- Call of Duty 4
12- Civilization V
13- Crysis
14- Crysis 2
15- DiRT 3
16- Dragon Age II
17- Hard Reset
18- Metro 2033
19- STALKER: Call of Pripyat
20- StarCraft II
21- Total War: Shogun 2
22- The Elder Scrolls: Skyrim
23- World of Warcraft
24- 3DMark 11
25- Unigine Heaven 2.0
26- Power Consumption
27- Fan Noise
28- Performance Summary
29- Performance per Watt
30- Performance per Dollar
31- Overclocking
32- Temperatures & Clock Profiles
33- Value & Conclusion
34- (35 User comments)
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