Tuesday, December 23, 2008

Danamics Innovates the First Liquid-metal Based CPU Cooler

Here's something new: A CPU cooler that comprises of a circulatory mechanism of liquid-metal, the liquid-metal has higher thermal conductivity than other liquid media, flowing liquid metal across an array of metal fins to disperse heat, and the cycle continues. What's more, the liquid is inextinguishable. That's 'cool'. Danamics innovated such a cooler for today's CPUs called the LM10.
The cooler also has no moving parts. The pump that circulates liquid-metal across tubes doesn't have them either. The pump functions on the principles of electromagnetic flow, the ferromagnetic liquid is subjected to flow caused due to changes in polarity of electromagnets. With no moving parts, the MTBF is substantially increased. Of course, you can use a retention module of some sort to hook up a fan or two on each side of the heatsink. This product will be available soon.

Sunday, December 7, 2008

Overclocking Phenom II at 6+ GHz: How AMD May Have Done It

A couple of weeks ago, at the AMD Austin Tech Day event, the company stunned the computer enthusiast community, by presenting to the press, the overclocking capabilities of the upcoming Phenom II X4 processor. The enginners managed to boot the machine at CPU speeds in excess of 6 GHz, 6.213 GHz to be precise. A close-up snap of a portion of the CPU-Z window showing the overclock, made its way to AMD's own photostream at Flickr, among other pictures related to the event.

The picture reveals the clock speed at 6213.6 MHz, bus speed at 200 MHz, FSB multiplier at an unreal 31.0x and resulting HyperTransport link speed at 1002.2 MHz. This would mean that they may have dropped down the HT link multiplier (normally 200 x 10.0 for the Phenom II X4 940) to 5x. We already know from previous reports that the vCore was set around 1.90 Volts, and that a copper pot with liquid nitrogen was used to cool the chip. The motherboard used, from the pictures, appears to be Gigabyte GA-MA790GP-DS4H, which is based on the AMD 790GX + SB750 chipset.


Saturday, December 6, 2008

Intel Core i7 Overclocking - Core i7 Overclocking

Introduction:

We have already benchmarked two new Nehalam processors- the 920 and the 965EE and compared them to other processors on the market. It is now time for some temperature tests and to see how high these processors can be overclocked using the ASUS P6T motherboard. It is very interesting how Intel works with the QPI bus v/s Multipliers. After a bit of tinkering around, we eventually found the sweet spot on each of these processors. So it was now time to see how hot these babies got on a one hour OCCT stress test


No surprises with the temperatures for the 130W CPU’s especially the 965EE hitting 4GHz on a stock air cooling solution.

Let’s get down to the nitty-gritty while we explain how we managed the overclock. We kept the voltage configuration set to Auto at first and increased the BCLK from 133 MHz to 150 MHz as a jumpstart. From there we steadily increased the BCLK in increments of 5 MHz. We eventually hit the wall at 180 MHz which was the limit at which we could enter Windows, but the OCCT test threw off a bit and we lost stability.

We then took the bus speed down in 2 MHz decrements with stress tests at each level and success arrived at 168 MHz. Next up was the Multiplier, which we toggled around a bit until we hit 4 GHz on the 965EE while the 920 stayed at 3360 MHz due to its multiplier limit of 20x. Increasing the voltage wasn’t doing us any good as we weren’t able to manage a stable one hour stress test. Although, higher clocks could be possible with a better cooling solution and a lot more time.



Conclusion:
From this we can take home the fact that the Core i7 has started out as a good overclocker. Getting to the sweet spots wasn't really difficult and all this achieved on the stock air cooling solution provided by Intel and stock core voltages. We feel that with better cooling and a lot more time, these processors can be taken even further to new heights.
The overclocked Core i7’s do make excellent performers and those seeking not only thrills from overclocking their CPU’s are in for a ride. So, are you ready to click on the Order button to enjoy the benefits?

World's first personal supercomputer unveiled

The world's first personal supercomputer, which is 250 times faster than the average PC, has been unveiled.


With its £4,000 price tag, the Tesla supercomputer is beyond the reach of most consumers, but is expected to revolutionise the way scientists and medical professionals carry out their work.
The gadget's power will allow doctors to process the results of brain and body scans much more quickly. This would allow them to tell patients within hours instead of days whether they have a tumour.

Scientists also believe that the supercomputers could help them discover cures for diseases, such as cancer and malaria, much more quickly than using traditional research methods.
This is because the device lets them run hundreds of thousands of simulations to create a shortlist of the drugs that are most likely to offer the potential for a cure.

Until now, supercomputers were massive systems made up of thousands of machines taking up entire rooms, which cost millions of pounds to build and maintain.
By contrast, Tesla personal supercomputers will cost between £4,000 and £8,000 and look much like an ordinary PC.

David Kirk, chief scientist at NVIDIA, the American company which has designed the new technology, said: "Pretty much anything that you do on your PC that takes a lot of time can be accelerated with this."

"These supercomputers can improve the time it takes to process information by 1,000 times.
"If you imagine it takes a week to get a result [from running an experiment], you can only do it 52 times a year. If it takes you minutes, you can do it constantly, and learn just as much in a day."

The new computers make innovative use of graphics processing units - a technological breakthrough, which the company claims could bring lightning speeds to the next generation of home computers.

They went on sale to British customers yesterday and will initially be sold to universities and to the scientific and research community.
The PC maker Dell, however, said that it would soon be mass producing them for the general consumer market.

Eric Greffier, a Dell senior executive, said: "Before mobile phones were reserved for the few, now we can't live without them. It will be the same with these supercomputers. They are the building block for the computing of the future."

Source: http://www.telegraph.co.uk/scienceandtechnology/technology/3564435/Worlds-first-personal-supercomputer-unveiled.html

Saturday, November 1, 2008

Sunbeam Core Contact Freezer

I bought my new CPU cooler to replace my stock AMD Athlon X2 HSF.

here it is in box


Out from the box

This cooler perform very well on AMD platforrm because it utilize all heatpipes at the bottom of the cooler.


Temp with AMD stock Cooler. 51 degree centigrade on idle


Temp with Core Contact Freezer CPU Cooler. 33 degree centigrade on idle.

My system to test dis cooler. Not so high end setup..

CPU: AMD Athlon X2 6000+ 3.0GHz
MotherBoard: Gigabyte GA-MA69G-S3H
RAM: 2 x 1GB Kingston PC6400 800MHz
PSU: Corsair HX1000w
Graphic Card: Gigabyte HD3870 GDDR4
Sound Card: Creative Fatal1ty Champion
HDD: WD 320GB, WD 640GB, Seagate 750GB
Thermal Compound: Tuniq TX2

BIOS Setup

Vcore: 1.45V
Multiplier: 15x
BUS Speed: 220Mhz

Result:

idle temp: 34c
load temp: 52c

Non-Airconditoned room. Using Orthos as the stress test program.

I managed to OC my CPU to 3.3Ghz which is 10% OC.