GPU posts

Brought on by yet another product refresh by the Big Green Eyeball Gang, BI wants to take a moment to crawl under the hood to discuss what this sort of evolution means in practical terms. Specifically, the architectural changes that occur at the manufacturing level for the chips themselves -- using smaller and smaller integrated circuit etchings, and making minor tweaks to the layout of the circuitry itself. The former is typically called the "manufacturing process," which refers to the photolithography that etches the actual circuitry onto the silicon wafers -- the creation of the chip itself. The latter, where minor tweaks are made to the circuit layout from batch to batch, is referred to as the "chip stepping," and is most commonly discussed when referring to CPUs within a single generation.

The easiest way to think about the signals traveling on the circuits inside of any chip is as though they're commuters. They have to do the speed limit (okay, so they're obviously not from New Jersey; unlike what the NHTSA dictates, 186,000 miles per second; it's not just a good idea, it's The Law); anything that improves how they get from point A to point B results in improved performance. Shortening the commute or offering a more efficient route to travel both serve this greater purpose.

With the impending deployment of a new calendar (why, hello Miss January), a young gamer's fancy turns lightly to thoughts of higher resolutions, better anti-aliasing levels, and new DX10.1 effects. But something is knocking the luster off the lust faster than dropping Aunt Edna's fruitcake in your lap. Jacking up a single setting is dropping your framerate to a crawl, even with the latest drivers hot off ATI or Nvidia's server.

You've got multiple CPU cores and a fistful of dollarsRAM, and things still aren't remaining as smooth and speedy as you'd like? In short, is stuffing another video card in your box the way to achieve Nirvana? Chances are, if you're already sporting a rig with the aforementioned goodies, a multi-GPU setup is about the only way to get a performance bump. The question becomes, is throwing another couple hundred dollars at the problem worth it?

Yesterday, Nvidia launched its new GTX 200 series graphics cards. Despite their hefty prices, they're the fastest graphics processing units on the market right now. Nvidia published a press release on Monday to promote the new hardware, but a lot of it was sales-speak. What do these new GPUs really do to push the envelope forward for gaming, and how do they do it?

Gamasutra had a man on the ground at the unveiling event in Santa Clara, CA, and he reported more detailed information than that which was found in the press release. Read the coverage of the event for developer quotes and plain descriptions of the nature of the new technologies and their potential applications -- gaming and otherwise.

Accoridng to Nvidia marketing VP Tony Tomasi, the GTX 200 series cards run at 93.1% of the hardware's theoretical limits -- much higher than previous generation GPUs. Developers working on everything from Far Cry 2 to Bionic Commando to Folding@home described applications of these new, 240-core beasts for their particular projects.

We here at Big Download naturally assume you like free stuff. That's why we've got that enticing heap of files up there, batting its eyelashes seductively at you (or maybe I need to switch to decaf that isn't laced with wormwood). But, chances are, free (as in beer) stuff is lurking on or under your desk right this moment. No, not the cans with the five cent deposit. No, not that copy of Daikatana you forgot to take to the pawn shop, either.

Unless you're already at the bleeding edge, got exceedingly unlucky, or are highly risk-averse, there's extra performance to be had out of the components you've already got by running them faster than their rated, factory-set speed. This practice is known as overclocking, and has grown from a lunatic fringe cottage industry into big business, frequently with the tacit approval of component manufacturers, and occasionally engaged in by some brands themselves.

In a nutshell, overclocking allows you to get the performance of a more-expensive part -- CPU, video card, or RAM module -- out of a less-expensive one by the strategic application of brains, willpower, voltage, cooling, and luck.