IT-Code-News: IT News Head Lines (AnandTech) 02/06/2014

EVGA Supernova 850 G2 Power Supply Review
Diversification is an important strategy for any company that wants to continue to grow, especially if their initial market segments become saturated. We've seen motherboard, memory, and now graphics cards manufacturers all look to diversify into other markets, and while some results have been less impressive than others, it's critical for companies to look for additional revenue streams. Today we're reviewing EVGA's effort to deliver a high performance power supply, the Supernova 850 G2. This isn't EVGA's first PSU, as they first started shipping PSUs over a year ago, but they're still a relative newcomer to the PSU scene. They have a competitive product on paper, so read on to find out more about the quality, performance, and features of the Supernova 850 G2.

Budget (<$100): AMD Radeon R7 250X

At $99 there is no other card even worth considering besides AMD’s Radeon R7 250X. NVIDIA’s closest cards remain more expensive for the performance, so compared to both NVIDIA and AMD’s lineups the R7 250X will outperform any AMD or NVIDIA card at similar prices, making it the fastest thing at this price.
From a performance perspective the R7 250X isn’t going to quite hit the sweet spot we outlined earlier, but for those gamers on a strict budget it will get the job done. In the long run it should be able to run most games even at 1080p with medium-to-low settings, along with keeping texture quality down a notch to account for its 1GB of VRAM. Battlefield, GRID 2, and even Total War: Rome 2 can easily hum along on this card at decent settings at 1080p.

Mainstream Sweet Spot ($149): AMD Radeon R7 265

Among the crowded $149 market our primary recommendation is the Radeon R7 265, AMD’s recently launched Pitcairn card designed to lock in this price point. Essentially a 7850 with a higher GPU clockspeed and a revised memory bus allowing for higher memory clockspeeds, the R7 265 a very capable card for the price.
From a performance standpoint the R7 265 not going to be able to play every game at 1080p at high settings, but it will be fast enough for medium-to-high depending on the game, which will be a couple of notches higher than what the $99 cards can do. Meanwhile the 2GB of VRAM will mean that future games shouldn’t bog down the card quite as badly; higher graphical fidelity games will slow it down like any other card, but there’s enough VRAM to keep up with the demands of higher resolution textures and heavier use of intermediate buffers.
Runner Up: NVIDIA GeForce GTX 750 Ti
Since our guide is written on the assumption that most buyers are looking for the best performance at a given price, our performance recommendations are going to favor AMD, as they’re more willing to throw out larger, more powerful cards at these sub-$200 price bands. NVIDIA on the other hand isn’t going to be able to directly compete with AMD on price/performance, but they do have an interesting technological advantage for gamers who are looking for a different set of tradeoffs.
Powered by NVIDIA's Maxwell architecture, at a price these days closer to $139 NVIDIA is able to offer the GeForce GTX 750 Ti, a card that offers performance approaching the R7 265 with much lower power consumption. The GTX 750 Ti is a sub-75W card – no external PCIe power connector required – allowing it to work in cases and systems where the near-150W R7 265 cannot, while also offering the improved acoustics that come with lower power consumption. So for OEM upgrades, or buyers just looking for something even quieter, the GTX 750 Ti is an interesting alternative. Just keep in mind that from a performance standpoint it trails the R7 265 by about 16%.
There are also a pair of options between here and the R7 250X that bear mentioning. The R7 260X resides at $119 and goes up against the GTX 750, with AMD holding a performance advantage similar to R7 265 vs. GTX 750 Ti. We’re fans of stepping up to the greater performance of the $149 cards, but it does offer something between $99 and $149.

1080p Gaming ($199): AMD Radeon R9 270X

Moving up our product lists, at $199 we’re finally up to cards that are fast enough to play most games at 1080p with high-to-ultra settings. More powerful/expensive cards will offer a further edge for the most demanding games, along with offering a bit more longevity, but for most games at the extremely common resolution of 1080p, it only takes $209 to hit a great level of graphical fidelity for that resolution.
To that end there is no better card at this price than AMD’s Radeon R9 270X. Based on a fully enabled Pitcairn GPU, 270X easily offers the most bang for the buck, keeping its distance from NVIDIA’s GTX 660 while getting rather close to NVIDIA’s more expensive GeForce GTX 760.
Runner Up: NVIDIA GeForce GTX 760: The GeForce GTX 760 offers a small but respectable performance lead over the Radeon R9 270X. On a pure price/performance basis it doesn’t make sense, and at $239 sits in an odd gap between the $199 270X and the more capable $300 cards, but for buyers looking for an NVIDIA option for 1080p gaming around $199, it’s as close as one can get.

Reaching For 1440p ($289): AMD Radeon R9 280X

Based on AMD’s venerable Tahiti GPU, the Radeon R9 280X offers the performance of the Radeon HD 7970 at around half the launch price of the aforementioned card. Since coming back down to its MSRP the 280X has continued to fall in price some, and lower-end cards can now regularly be found on sale for less than $299.
For the 280X we’re looking at a card that will straddle 1080p and 1440p. It’s not quite fast enough to work in every game at 1440p with high quality settings, but it’s fast enough for many of them. Alternatively, it’s fast enough at 1080p that it has no problem at that resolution with everything cranked up, including high levels of MSAA and even SSAA in some games. Plus the 3GB of VRAM will give it some leg room if future games demand more VRAM.
On a competitive basis the R9 280X performs very similarly to NVIDIA’s GeForce GTX 770, generally trailing by a few percent. However with AMD making the conscientious decision to undercut NVIDIA on pricing here, it gets our nod for this bracket.
Runner Up: NVIDIA GeForce GTX 770
NVIDIA’s counterpart to the R9 280X is the GeForce GTX 770. With the cheaper GTX 770 cards now available for around $319 it still holds a price premium over AMD, but less than it once was. The GTX 770 is ever so slightly faster than the 280X – leading by a few percent on average – which generally isn’t enough to offset the price difference, but it goes without saying that it leaves the two cards close. The GTX 770 is a perfectly practical alternative to the 280X in this case, trading a slightly higher price tag for entry into NVIDIA’s ecosystem, something that may become more important as G-Sync monitors are scheduled to become available next month.

Extreme Performance for Cheap ($399): AMD Radeon R9 290

For gamers who want to top-tier performance without completely breaking the bank, AMD’s Radeon R9 290 is easily going to be the card of choice. Offering performance that rivals the more expensive R9 290X and GeForce GTX 780, the 290 is unparalleled in performance for its price. At this level of performance it should be able to run virtually anything at 1440p with high-to-extreme settings, and 1080p gamers should have no trouble hitting 120fps in anything that isn’t CPU limited to begin with.
As the vast majority of reference-style cards have gone out of circulation by now, there is thankfully a good selection of superior semi-custom and fully-custom cards at $399 (and sometimes on sale for even less). These cards offer all of the fantastic performance of the 290 without the noise or throttling drawbacks of the reference 290. Just keep in mind that all of these cards will be open air cooled cards that will want a case environment that can dissipate the additional 250W-300W of heat.

Extreme Performance with Refinement ($499): NVIDIA GeForce GTX 780

Positioned as NVIDIA’s lowest tier GK110 card, the high performance offered by the GeForce GTX 780 means it should be fast enough to run virtually anything at 1440p with high-to-extreme settings, and 1080p gamers should have no trouble hitting 120fps in anything that isn’t CPU limited to begin with. To that end the GTX 780 is the cheapest card that can drive all sub-4K single-monitor setups, giving it a sweet spot position of its own in the current market.
As an added bonus, even at the $499 base price this gets access to NVIDIA’s impressive metal shrouded blower, which in our tests is enough to keep noise levels under 50dB. So for gamers looking for a balance between performance, cooling effectiveness, and noise, the GTX 780 is a star. Meanwhile for gamers looking at open air coolers, GTX 780 cards with alternative coolers such as EVGA’s ACX cooler will find that the GTX 780 can be even quieter for the usual tradeoff between a blower and an open air cooler.
Runner Up: Radeon R9 290X
With prices on the R9 290X falling as low as $499 these days, the 290X has shifted over to being direct competition for the GTX 780. Like the R9 290 the supply of reference cards is nearly gone, so everything from top to bottom is an acoustically superior semi/fully-custom open air cooled card. Looking primarily at the cheapest cards – what are essentially near-reference in clockspeeds and features – the R9 290X puts up a good fight with the GTX 780, capable of edging it out at the same retail price. The only issue the 290X faces is that the 290 is so close in performance that it doesn’t have much of a lead here, making it harder to stand apart from the 290 and the GTX 780.

Taking the Single-GPU Crown For Gaming ($649): NVIDIA GeForce GTX 780 Ti

For the fastest single-GPU card on the market for gamers, NVIDIA’s top tier GK110 part, GeForce GTX 780 Ti, stands alone. The performance advantage over the Radeon R9 290X (or even the 290 for that matter) is not incredible, but there’s admittedly nothing new about paying a notable price premium for the very best card.

4K for Me ($1000+): 2x AMD Radeon R9 290X

Though the Radeon R9 290X doesn’t make a ton of sense on its own in light of competition from the GTX 780 and R9 290, if we want to move into 4K gaming and the extreme load it presents, a pair of 290Xs becomes a very tantalizing option. Thanks to AMD’s XDMA engine the 290X has no problem scaling up to 4K in Crossfire, taking AMD’s decent single-card 4K performance and scaling it up to something that allows for 4K without the quality compromises. Considering 60Hz 4K monitors still run for $800+ and demand incredible GPU performance to drive them, to get the most of of such a monitor it doesn't make sense to pair it up with anything less than a pair of 290Xs.
Of course the Radeon R9 295X2 deserves a mention here. As we discussed in our recap of April, AMD’s recently launched dual-GPU flagship card offers all of the performance of the 290X in Crossfire with much better acoustics and in a smaller package. Since our guide is based first and foremost on price/performance our primary recommendation for this bracket is going to be the 290X CF, but if you can make the steep climb to $1500 the 295X2 and its liquid cooler is a very impressive product whose vastly improved acoustics make 295X2 a superior option to 290X CF.
Meanwhile the GTX 780 Ti in SLI is also going to be a viable alternative here. From a performance perspective it will trail the AMD setups by 5% or so at 4K, so while it can’t match the AMD setups hit-for-hit it doesn’t significantly fall behind, making it practical to get similar performance in the NVIDIA ecosystem. The catch is that at $1300 for the dual card setup it’s closer to the 295X2 than the 290X CF in price, so it doesn’t have a distinct sweet spot on price or acoustics like either AMD configuration. But unlike either AMD option, the GTX 780 Ti is available in a high quality blower configuration, allowing a 3rd option between the widely spaced open air cards of R9 290X and the unconventional CLLC of the R9 295X2.

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AMD Posts Mantle Whitepaper

As part of a larger Mantle promotion, AMD has posted a number of blogs on their site detailing their low level API. The blog posts themselves are unabashedly closer to advertising than technical writing, but as something of a diamond in the rough AMD has also published a whitepaper on Mantle.
At 11 pages long the Mantle whitepaper offers a solid high level overview of the technology. In it AMD delves into further detail about several aspects of the API, without getting buried in the minutia of an API in a way that only seasoned programmers can appreciate. Among the subjects covered are Mantle's memory model, execution model, pipeline model, and the basic tenet of where low-level APIs can reduce overhead and improve performance over high level APIs.
The bulk of this information is a repeat from AMD’s earlier developer presentations, so we won’t spend any time going over the materials in-depth here, but for a more approachable look at the API from AMD’s perspective this is a great start.

May 2014 GPU Performance Guide
Performance Band	Price Range	Recommendation
1080p (Low)	$99-$149	AMD Radeon R7 250X
1080p (Med)	$149-$199	AMD Radeon R7 265
1080p (High)	$199-$289	AMD Radeon R9 270X
1440p (Med)	$289-$399	AMD Radeon R9 280X
1440p (High)	$399-$649	AMD Radeon R9 290 NVIDIA GeForce GTX 780
1440p (Max)	$649+	NVIDIA GeForce GTX 780 Ti
4K/Multi-Monitor (High)	$1000+	2x AMD Radeon R9 290X AMD Radeon R9 295X2

Sunday, June 1, 2014

IT News Head Lines (AnandTech) 02/06/2014