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Topic de reduceri la jocuri
by Foxter
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Noutăţi, prezentări, teste laptop
by Foxter
[23 November 2014, 15:48]
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- (22 November 2024, 00:10)
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Users: 0Guests: 237Total: 237Today we are going to talk about two new coolers that differ dramatically from one another in price, design and functionality. But how greatly will they differ in cooling efficiency and acoustics? Let’s find out from our new article.
<p><span style="font-size: small;"> Throughout the lifetime of the 400 series, NVIDIA launched 4 GPUs: GF100, GF104, GF106, and GF108. Launched in that respective order, they became the GTX 480, GTX 460, GTS 450, and GT 430. One of the interesting things from the resulting products was that with the exception of the GT 430, NVIDIA launched each product with a less than fully populated GPU, shipping with different configurations of disabled shaders, ROPs, and memory controllers. NVIDIA has never fully opened up on why this is – be it for technical or competitive reasons – but ultimately GF100/GF104/GF106 never had the chance to fully spread their wings as 400 series parts.</span></p>
<p><span style="font-size: small;"> It’s the 500 series that has corrected this. Starting with the GTX 580 in November of 2010, NVIDIA has been launching GPUs built on a refined transistor design with all functional units enabled. Coupled with a hearty boost in clockspeed, the performance gains have been quite notable given that this is still on the same 40nm process with a die size effectively unchanged. Thus after GTX 560 and the GF114 GPU in January, it’s time for the 3<sup>rd</sup> and final of the originally scaled down Fermi GPUs to be set loose: GF106. Reincarnated as GF116, it’s the fully enabled GPU that powers NVIDIA’s latest card, the GeForce GTX 550 Ti.</span></p>
<p><span style="font-size: small;"><a target="_blank" href="http://www.anandtech.com/show/4221/nvidias-gtx-550-ti-coming-up-short-at-150">Read more...</a><br />
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There has been the same undisputed leader in the graphics cards market for almost eighteen months now. As with many good things, they all must come to an end or at least step aside in order to give way to the new generation. Sticking to its ‘premium products are of dual chip design’ dogma, AMD has just released its latest dreadnought – Radeon HD 6990.
Asus provided their mainboards with all sorts of new features and functionality and we are very excited to tell you about them. As always they rolled out the entire new lineup of products, so a lot of things we will discuss today are also true for a number of other models in the series.
In our today’s article we are going to learn which of these multi-processor technologies provides maximum performance gain compared with a single graphics accelerator and what obstacles the users may face in either case.
The AMD Radeon HD 6990, otherwise known as Antilles, is a card we have been expecting for some time now. In what’s become a normal AMD fashion, when they first introduced the Radeon HD 6800 series back in October, they also provided a rough timeline for the rest of the high-end members of the family. Barts would be followed by Cayman (6950/6970), which would be followed by the dual-GPU Antilles (6990). Ultimately Cayman ended up being delayed some, and as a result so was Antilles.
So while we’ve had to wait longer than we anticipated for Antilles/6990, the wait has finally come to an end. Today AMD is launching their new flagship card, retiring the now venerable 5970 and replacing it with a new dual-GPU monster powered by AMD’s recently introduced VLIW4 design. Manufactured on the same 40nm process as the GPUs in the 5970, AMD has had to go to some interesting lengths to improve performance here. And as we’ll see, it’s going to be a doozy in more ways than one.
A new cooler from the Japanese Scythe Company is their second attempt to design a universal and at the same time pretty efficient graphics card cooling system. Let’s see if they succeeded.
We recently received a new power supply from HuntKey dubbed the R90, or Jumper 300G for the western markets. It uses the HK400-52PP layout, which means the PSU is capable of delivering 400W at lower temperatures; however, the 300W rating is for 45C operation. The 300G is also one of the smaller PSUs with an 80 Plus Gold rating, making it an interesting option for HTPCs and average computers. But what about the price?
We don't have an exact figure for the US market yet, but materials and parts should cost less than half of what the Seasonic X-400FL requires, which means final pricing could be around $80-$90. One advantage the Jumper 300G has over the X-400FL is that it uses a native 400W design, where Season is building off an 850W design. Since the 300G comes with a fan, it will obviously generate more noise than the fanless X-400FL, the temperatures should also be lower. This could very well be the actively cooled alternative to Seasonic's X-400FL.
Unlike Seasonic, this is a fixed cable PSU. The HK400 is similar to what many OEMs might use, only with a retail box around it. HuntKey is quite proud of their design and promises very good performance. While we may not have a firm price yet, we can certainly check the voltage quality and other performance characteristics.
Internally, the unit uses a resonant circuit with ZVS (Zero Voltage Switching), active recrifying, and of course active PFC. While HuntKey sells many cheap power supplies in China, this is an example of the sort of quality they can acheive when they're not chasing the lowest price; we'll see more eveidence of this with the capacitors on page four. HuntKey is also one of the first manufacturers to offer an 80 Plus Platinum certified PSU, but that's a topic for another day. The Jumper 300G (or R90) has plenty of reserve capacity, and HuntKey makes use of this by including two PCIe connectors: one 6-pin and one 6/8-pin on a single cable. That's almost certainly a first for the 300W PSU market, and with such features HuntKey hopes to expand their presence in the Asian market.
<p><img width="160" height="107" align="right" alt="" src="/tp-images/Image/BrainDriver_DrGoehring_small.jpg" /></p>
<p>Cercetatorii de la Universitatea Freie din Berlin au dezvoltat o tehnologie care permite controlul masinii doar prin intermediul gandului.</p>
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<div>Metoda presupune folosirea unor senzori care masoara undele cerebrale pentru a determina comenzi...</div>
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<p><span style="font-size: small;">As we know, Nvidia GeForce GTX 570 managed to successfully replace the previous flagship solution – GeForce GTX 480. But will it be able to compete against the new leader at least with factory overclocking in place? Let’s find out in our new review of two new graphics cards from Gainward and Zotac. </span></p>
<p><span style="font-size: small;"><a target="_blank" href="http://www.xbitlabs.com/articles/video/display/geforce-gtx-570-oc.html">Read more...</a><br />
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