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Nvidia Corp. has introduced its first graphics solutions based on the code-named Maxwell architecture that was designed to further improve performance per watt. The new GeForce GTX 750-series graphics cards are based on the GM107 graphics processing units and are aimed at the mainstream market.

"We know that to advance performance, we must advance performance per watt, because every system we design for has a power limit -- from supercomputers to PCs to smartphones. That is why we architected Maxwell to be the most efficient GPU architecture ever built," said Scott Herkelman, general manager of the GeForce business unit at Nvidia.

Maxwell: Maximizing Performance per Watt

To boost efficiency of the first-generation Maxwell architecture and to boost performance per stream processor/per watt, Nvidia completely redesigned streaming multiprocessor (SM) compared to Kepler architecture. With Kepler, the each SM contained control logic that routed and scheduled traffic for 192 cores. This was complex for a single piece of control logic. With Maxwell, Nvidia divided the SM into four blocks, each with its own piece of control logic. Each block features its own control logic (i.e., instruction buffer, warp scheduler, dispatch unit), register file and 32 stream processors. Each Maxwell SM features its own PolyMorph Engine 2.0 unit (one vertex fetch, one tessellator, one viewport transform, one stream output, etc.).


Improvements to control logic partitioning, workload balancing, clock-gating granularity, compiler-based scheduling, number of instructions issued per clock cycle, and many other enhancements allow the Maxwell SM (also called “SMM”) to far exceed Kepler’s SM (SMX) efficiency. The new Maxwell SM architecture enabled Nvidia to increase the number of SMs to five in GM107, compared to two in GK107, with only a 25% increase in die area.

The GM107, the first GPU based on Maxwell architecture, integrates 5 SMs (640 stream processors), 40 texture units, 16 raster operating units, 2MB L2 cache as well as 128-bit memory controller (divided into two 64-bit controllers). The chip is manufactured using 28nm process technology at TSMC and contains 1.87 billion transistors. By contrast, the GK107 only sports 384 stream processors.

By breaking up one giant problem of the control logic doing the scheduling and threading on each SM into smaller work, and by performing the global partitioning in software, we were able to design the chip to be more efficient. As a result, we’ve actually increased the amount of peak performance per core by 35% when compared to the cores in chips built with the previous generation Kepler architecture.

Since Nvidia uses less overall cores to get more performance, less power is ultimately used, increasing the performance/watt for the Maxwell architecture. A number of additional optimizations were made inside the chip to increase power efficiency.

The GM107 GPU supports all modern high-end features like DirectX 11, OpenGL 4.3, OpenCL 1.2, stereoscopic-3D, multi-monitor capability, PhysX, ShadowPlay, G-Sync, GameStream and so on. Unfortunately, it does not seem that the first-gen Maxwell supports DirectX 11.2.

GeForce GTX 750, GTX 750 Ti Available Now

The GeForce GTX 750 Ti and GTX 750 graphics cards are small, only 5.7” long (14.5cm), and do not require an internal power connector. Since the GTX 750-series graphics boards consume so little power, they run extremely quietly and generate very little heat, making them perfect for use in small form-factor and home theater PCs.

The Nvidia GeForce GTX 750 Ti and GTX 750 graphics boards are now available from add-in card suppliers, including Asustek Computer, Colorful, EVGA, Gainward, Galaxy, Gigabyte, Innovision 3D, MSI, Palit, PNY and Zotac. Pricing is expected to start at $119 for the GTX 750, $139 for the 1GB GTX 750 Ti and $149 for the 2GB GTX 750 Ti. The GeForce GTX 750 Ti and GTX 750 GPUs will also be sold in fully configured systems from leading U.S.-based system builders as well as other system integrators outside North America.

According to Nvidia, the GeForce GTX 750 Ti significantly outperforms its main rival on the market, the AMD Radeon R7 260X which is based on Bonaire XTX graphics chip (896 stream processors, 56 texture units, 16 raster operating units) powered by second-generation GCN architecture.

Tags: Nvidia, Geforce, Maxwell, GM107, Kepler, 28nm


Comments currently: 20
Discussion started: 02/21/14 04:59:01 PM
Latest comment: 09/08/16 04:25:12 PM
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The Radeon 265 decimates the 750TI at the same price, so that's that.
3 0 [Posted by: redeemer  | Date: 02/21/14 04:59:01 PM]
- collapse thread

Nope. Nvidia has a superior design. AMD must answer by Q4 or lose more market.
1 1 [Posted by: linuxlowdown  | Date: 02/22/14 06:40:15 AM]
Bwuahaha wake up
0 0 [Posted by: redeemer  | Date: 02/22/14 01:15:52 PM]
Yep fully awake and still $0.5M AMD long.
0 0 [Posted by: linuxlowdown  | Date: 02/22/14 04:04:03 PM]

redeemer is actually correct the r7 265 beats the 750ti pretty easily in many benchmarks.

3 0 [Posted by: SteelCity1981  | Date: 02/22/14 03:00:34 PM]
- collapse thread

But Maxwell has much lower power draw... which means Nvidia cards will have an advantage at the same performance level. This will be significant enough for crypto-currency miners to jump ship, as electricity costs are part of the profit equation. AMD is making a killing from the miners at the moment. Have you seen some of the R290 rigs out there?

1 2 [Posted by: linuxlowdown  | Date: 02/22/14 03:59:57 PM]
it terms of raw performance r7 265 is better. I mean there is no way of around that. if you want to talk about performance per watt the 750gti gets the nod, but in terms of raw performance the r7 265 is better.
2 0 [Posted by: SteelCity1981  | Date: 02/22/14 04:42:53 PM]
Forest for the trees.... this is just the first card released in the new Maxwell series, not the only one to come!! But this is usually what happens. AMD releases first, Nvidia comes up with something slightly better second. That is why Mantle is so important because it gives AMD cards (coupled with a weaker APU/CPU) a boost, despite architectural deficiencies, at the lower end of the gaming market (Asian market). But there are many bugs that need to be ironed out in the AMD graphics driver, such as frame pacing in dual APU/ graphics card setups, that will be critical for AMD laptop wins. And then AMD relies on game houses' programmers to port to the Mantle API and to do it properly. Unfortunately, the BF4 roll out has not happened smoothly and has lessened the PR impact after the initial AMD surprise. AMD needs to bring forward plans to release either a new GCN core or a new graphics architecture for the 2014Q4 Christmas splash season (late October/ early November).
0 1 [Posted by: linuxlowdown  | Date: 02/22/14 07:46:23 PM]
yes, but this also shows that a refresh radeon series based on the radeon 7000 series is able to beat a new Maxwell arch at the same time.
0 0 [Posted by: SteelCity1981  | Date: 02/23/14 12:35:35 PM]
Sorry, no such evidence really. Be here's hoping.
0 0 [Posted by: linuxlowdown  | Date: 02/23/14 07:27:23 PM]
so the toms hardware doesn't show that an refresh 7000 series radeon like the r7 265 beats the 750ti Maxwell? the benchmarks clearly show that so I don't know what you mean...
0 0 [Posted by: SteelCity1981  | Date: 02/23/14 07:45:10 PM]
That Maxwell arch is using significantly lower power to come within a whisker of the r7 265. Here's a quote from TechReport

"As one might expect, the GTX 750 Ti is among the most efficient GPUs in each of these categories, which means it makes very effective use of its on-chip graphics resources. The most striking contrast here is in shader flops; in theory, the R7 260X nearly doubles the peak rate of the GTX 750, yet the two cards perform about the same in our suite of current games".

"NVidia released its first cards based on its new Maxwell GPU architecture, and while performance of the two mid-range cards is nothing to write about, the cards' power usage is. I think it's obvious from early benchmarks that AMD can compete with Maxwell on performance per dollar but not, at this time, in performance per watt. This bodes well for mobile adoptions for NVidia in the next round of notebooks".

SteelCity, you know I'm a great AMD supporter (actually since the mid 90s). But I'm calling a spade a spade in the interest of the company and its investors. AMD WILL LOSE OUT IN LAPTOPS IF IT DOESN'T BRING FORWARD ITS GRAPHICS ROADMAP AND FIX DUAL GRAPHICS FRAME PACING.
0 1 [Posted by: linuxlowdown  | Date: 02/23/14 08:03:07 PM]
you are comparing the r7 260x in your links. you said nope when NVidia has a supeiror design when redeemer stated that the r7 265 beats the 750ti and it does. the benchmarks showed that. the 750ti is targeted towards the r7 265 over the 750ti if energy per watt is a concern because you have a crappy psu that came with a namebrand pc then the 750ti is the best choice seeing as it doesn't require an external power connector.

and yes we know that the 750 series is better per watt then the r7 265 that's not what the argument was about it was about raw performance compared to the r7 265 and benchmarks clearly show that the radeon r7 265 beats the 750ti in raw performance hands down. so for a card that is in the same price range as a 750 ti the logical choice for better raw performance would be to buy the r7 265.
2 0 [Posted by: SteelCity1981  | Date: 02/23/14 08:40:59 PM]
The graphs contained in the link compares the R7 265 as well. Fact - R7 265 is more powerful than 750ti - YES, marginally. But I think this argument wins the battle but loses the war. There will be certainly more Maxwell cards to come in the next few months that will very highly likely trounce AMD's current products, given Maxwell's smaller die size, more efficient shaders, and significantly greater power efficiency overall. AMD MUST BE MORE AGGRESSIVE WITH PRODUCT REFRESHES TO WIN THE MARKET. I am also concerned with Excavator at 28nm because 20nm transistors lead to poorer performance/ lower clocks. AMD needs to use FinFET transistors in the APUs. But now this doesn't look likely until post Excavator (2015H2/2016), where AMD will use Jaguar cores rather than Bulldozer derived ones. The next 2 years are going to look like low growth ones again, unless AMD gets traction with ARM server business and other lucrative custom SoC contracts. But I do hope I'm awfully wrong.
0 1 [Posted by: linuxlowdown  | Date: 02/23/14 11:12:48 PM]
well until then we were talking about the r7 265 vs the 750ti as of the argument at hand the r7 265 wins hands down. now if you want to talk about future Maxwell cards vs R cards etc.. then that's another topic for another time.
0 0 [Posted by: SteelCity1981  | Date: 02/24/14 12:26:34 PM]
In the not too distant future I suspect.
0 0 [Posted by: linuxlowdown  | Date: 02/26/14 04:32:22 AM]

"GPU shipments in the fourth quarter of 2013 were in the green. Shipments were up 2 percent year-on-year and 1.6 percent sequentially. However, AMD did not have a stellar quarter. According to Jon Peddie Research, AMD’s overall unit shipments were down 10.4 percent last quarter. Intel gained 5.1 percent, while Nvidia was up 3.4 percent." Source : Fudzilla

With all those AMD radeons selling like hotcakes, I dont understand how they lost a few points in market share instead of gaining? Maxwell on the other hand looks very promising, Maxwells high end card should be able to beat GCN in mining with Kh/W if not Kh/$.
0 0 [Posted by: GhostBOT  | Date: 02/23/14 02:40:45 AM]

show the post
0 4 [Posted by: JanGozi  | Date: 02/23/14 08:46:27 AM]
- collapse thread

Don't be a dickhead.
0 0 [Posted by: linuxlowdown  | Date: 02/23/14 06:23:40 PM]


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