Intel BX80646I74790S Core i7 4790S 3.2 GHz CPU

Product Information

Power Draw: Our testing between a Core i7 4790S and a Core i7 4790 indicates that S-series processors draw less power when more than half the threads on the CPU are being used. On the other hand, our testing also showed that the 4790S actually draw slightly more power when less than half threads are being used. Single-Core สูงสุดที่เทคโนโลยี Intel® Turbo Boost สามารถทำได้ โปรดดู www.intel.com/content/www/th/th/architecture-and-technology/turbo-boost/turbo-boost-technology.html สำหรับข้อมูลเพิ่มเติม As you can see in the above chart, it is clear that as more CPU threads are being used, the 4790S runs at an increasingly lower frequency than the standard 4790. This means that even though the 4790S and 4790 technically have the exact same maximum Turbo Boost frequency, they are very different as more threads are being used. Depending on the number of threads, the 4790S is anywhere from .1 to .2 GHz slower than the 4790. This isn't much - only about 2.5 to 5.3% slower - but it lines up almost exactly with what we say in our real world benchmarks. System and Maximum TDP is based on worst case scenarios. Actual TDP may be lower if not all I/Os for chipsets are used.

See http://www.intel.com/content/www/us/en/architecture-and-technology/hyper-threading/hyper-threading-technology.html?wapkw=hyper+threading for more information including details on which processors support Intel® HT Technology. To compare the official specifications between S-series CPUs and their standard counterparts we took four of the latest generation Haswell CPUs. There are, of course, more models available from Intel, but we've found that the differences between S-series and their standard counterparts to actually be very consistent, so this is a good representation of the S-series as a whole. Basic CPU Specifications Intel processor numbers are not a measure of performance. Processor numbers differentiate features within each processor family, not across different processor families. See http://www.intel.com/content/www/us/en/processors/processor-numbers.html for details. Matt Bach is the head of Puget Labs and has been part of Puget Systems, a boutique builder of gaming and workstation PCs, since the early days. This article was originally published on the Puget blog.As we pointed out earlier in this article, due to Intel's Turbo Boost technology an Intel CPU will almost always operate above its rated base frequency when put under load. What is often overlooked, however, is that the Turbo Boost frequency at which a CPU runs depends on the number of cores actively being used. In fact, the maximum Turbo Boost frequency Intel lists on their specification sheets only applies if the CPU is using just a single core. As increasingly more cores are used simultaneously, the maximum Turbo Boost frequency is reduced. Performance: On applications that can only utilize a few threads, the S-series CPUs are essentially identical in performance to their standard counterparts. If an application can use a higher number of CPU threads (or if many applications are running at once), however, the S-series CPUs can be as much as 5% slower than the standard models. Max Turbo Frequency refers to the maximum single-core processor frequency that can be achieved with Intel® Turbo Boost Technology. See www.intel.com/technology/turboboost/ for more information and applicability of this technology. Intel มีไว้เพื่อจุดประสงค์ในเรื่องทั่วไป การศึกษา และการวางแผนเท่านั้น และประกอบด้วยหมายเลข Export Control Classification Numbers (ECCN) และ Harmonized Tariff Schedule (HTS) การใช้งานใดๆ อันประกอบด้วยการจัดประเภทของ Intel จะไม่ได้รับการปกป้องจาก Intel และจะไม่ถูกตีความว่าเป็นการรับรองหรือรับประกันเกี่ยวกับ ECCN หรือ HTS ที่ถูกต้อง บริษัทของคุณต้องรับผิดชอบในการระบุการจัดประเภทที่ถูกต้องของธุรกรรมของคุณ ในฐานะที่เป็นผู้นำเข้าและ/หรือผู้ส่งออก

To summarize both our research and testing results, there are three major ways in which Intel S-series processors differ from the standard models: Intel ไม่ได้เป็นเครื่องบ่งชี้ประสิทธิภาพ หมายเลขโปรเซสเซอร์แสดงถึงความแตกต่างของคุณลักษณะในโปรเซสเซอร์แต่ละตระกูล โดยไม่ข้ามตระกูลของโปรเซสเซอร์ โปรดดู http://www.intel.com/content/www/th/th/processors/processor-numbers.html สำหรับรายละเอียดhttp://www.intel.com/content/www/th/th/architecture-and-technology/hyper-threading/hyper-threading-technology.html?wapkw=hyper+threading สำหรับข้อมูลเพิ่มเติมรวมถึงรายละเอียดว่ามีโปรเซสเซอร์ใดบ้างที่สนับสนุน Intel® HT Technology First, the S-series CPUs have a much lower base frequency than the standard CPUs. You would think this means that they will always be slower, but we've shown in the past that the base frequency is somewhat of a meaningless specification due to Intel's Turbo Boost and Speedstep technologies. These technologies mean that an Intel CPU will only rarely operate at the advertised base frequency which brings into question whether this spec actually has any bearing on real-world performance. Likely, the inconsistencies we found in the previous section are related to how many threads each benchmark is able to utilize and how that affected the amount of Turbo Boost each CPU received. To determine the actual amount of Turbo Boost available to our test CPUs based on the number of active threads we ran Prime95 on each CPU with the bechmark limited to between one and eight active threads. S-series processors are supposed to be lower wattage (that is how they are primarily advertised by Intel) so the slightly lower performance is to be expected and in some ways is secondary to the power draw of the S-series CPUs. What we found was that the 4790S did indeed draw less power when five to eight threads were being used, but with fewer than five threads the 4790S actually pulled more power than the standard 4790 by an average of 6%. In other words, TDP is only what the wattage of the CPU is when running at the base frequency, not the maximum frequency as determined by Turbo Boost. And since we have found that the base frequency isn't a great indicator of performance, this means that TDP is also a questionable specification. It certainly indicates that the S-series processors should run at a lower wattage, but unless you disable Turbo Boost it does not in any way guarantee it.

Temperature: Even though the 4790S used more power in some applications than the 4790, we didn't really see the 4790S running any hotter than the 4790 in those instances. When the 4790S does use less power, however, we saw a drop in temperature of up to about 5 °C. This isn't insignificant, but at the same time is not going to be a game changer in most situations.To sum up, all the official specifications really tell us is that S-series processors may be a bit slower and may run a bit cooler than their standard equivalent but it is far from conclusive. For that, we will need to perform our own testing. Test Setup Technological solutions and additional instructions supported by Core i7-4790K and Core i7-4790S. You'll probably need this information if you require some particular technology. Instruction set extensions Intel อาจเปลี่ยนแปลงวงจรชีวิตการผลิต ข้อมูลจำเพาะ และรายคำอธิบายผลิตภัณฑ์ได้ตลอดเวลาโดยไม่ต้องแจ้งให้ทราบล่วงหน้า ข้อมูลในที่นี้มีให้แบบ "ตามที่เป็น" และ Intel ไม่สามารถยืนยันหรือรับประกันแต่อย่างใดเกี่ยวกับความเที่ยงตรงของข้อมูลนี้ รวมไปถึงคุณสมบัติของผลิตภัณฑ์ ความพร้อมวางจำหน่าย ฟังก์ชั่นการทำงาน หรือความเข้ากันได้ของผลิตภัณฑ์ที่ระบุ โปรดติดต่อตัวแทนจำหน่ายระบบสำหรับข้อมูลเพิ่มเติมเกี่ยวกับผลิตภัณฑ์หรือระบบเฉพาะ HDD, คอนโทรลเลอร์สำหรับกราฟิก, หน่วยความจำ, BIOS, ไดร์เวอร์, Virtual Machine Monitor-VMN, ซอฟท์แวร์แพลตฟอร์ม และ/หรือระบบปฏิบัติการ) สำหรับความเข้ากันได้ของคุณสมบัติ ฟังก์ชันการทำงาน, ประสิทธิภาพ และประโยชน์อื่นๆ ของคุณสมบัตินี้อาจแตกต่างกันไปตามการกำหนดค่าของระบบ

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All driver and Windows updates were applied prior to testing. Coretemp was used to record both the CPU temperature and operating frequency along with a "watts up? PRO" power meter with USB logging to record the system power draw. Real world difference between 4790 and 4790S Specifications and connection of peripherals supported by Core i7-4790K and Core i7-4790S. PCIe version