Breaking News
Comments
Newest First | Oldest First | Threaded View
TarraTarra!
User Rank
Author
Power and frequency not scaling
TarraTarra!   9/10/2014 2:02:16 PM
NO RATINGS
What was interesting here was that the turbo feature has two frequencies - one with AVX instructions and the other without. When running AVX instructions the frequency drops to 1.9GHz. Without AVX instructions it is 2.3GHz. This goes to say how carefully Intel has had to pack these cores into that power budget. In certain applications the previous IvyBridge 10core and 12core parts have higher performances as they can clock higher.

 

This has been underwhelming to say the least.

TarraTarra!
User Rank
Author
Re: 18?
TarraTarra!   9/10/2014 1:54:37 PM
NO RATINGS
@colin is right. Intel went with a ring based interconnect from sandybridge and that makes it easier to come up with odd number of cores. I am sure 18 was as far as they could push the core count without blowng up the socket power budget. The part is rated at 145W but apparently burns close to 165W in reality.

krisi
User Rank
Author
Re: 18?
krisi   9/10/2014 1:21:33 PM
NO RATINGS
thank you Colin

R_Colin_Johnson
User Rank
Author
Re: 18?
R_Colin_Johnson   9/10/2014 1:18:25 PM
NO RATINGS
It seems that 18 was chosen because the layout allowed it. Here is what Intel's chief architect says: "The internal micro-architecture is not constrained to a power-of two. Implementing the layout as four columns (three with four cores and the fourth with six cores) allowed us to efficiently use the available silicon area and provide the maximum number of cores. "

krisi
User Rank
Author
18?
krisi   9/9/2014 2:59:17 PM
NO RATINGS
18 cores? such a strange number...I thought it should be multiple of 2, say 16...any explanation?



Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
Radio
LATEST ARCHIVED BROADCAST

What are the engineering and design challenges in creating successful IoT devices? These devices are usually small, resource-constrained electronics designed to sense, collect, send, and/or interpret data. Some of the devices need to be smart enough to act upon data in real time, 24/7. Specifically the guests will discuss sensors, security, and lessons from IoT deployments.

Brought to you by:

Most Recent Comments
Like Us on Facebook
Special Video Section
The LTC2380-24 is a versatile 24-bit SAR ADC that combines ...
In this short video we show an LED light demo to ...
02:46
Wireless Power enables applications where it is difficult ...
07:41
LEDs are being used in current luxury model automotive ...
With design sizes expected to increase by 5X through 2020, ...
01:48
Linear Technology’s LT8330 and LT8331, two Low Quiescent ...
The quality and reliability of Mill-Max's two-piece ...
LED lighting is an important feature in today’s and future ...
05:27
The LT8602 has two high voltage buck regulators with an ...
05:18
Silego Technology’s highly versatile Mixed-signal GreenPAK ...
The quality and reliability of Mill-Max's two-piece ...
01:34
Why the multicopter? It has every thing in it. 58 of ...
Security is important in all parts of the IoT chain, ...
Infineon explains their philosophy and why the multicopter ...
The LTC4282 Hot SwapTM controller allows a board to be ...
This video highlights the Zynq® UltraScale+™ MPSoC, and sho...
Homeowners may soon be able to store the energy generated ...
The LTC®6363 is a low power, low noise, fully differential ...
See the Virtex® UltraScale+™ FPGA with 32.75G backplane ...
Vincent Ching, applications engineer at Avago Technologies, ...