Subject: Graphics Cards | February 19, 2014 - 04:43 PM | Jeremy Hellstrom
Tagged: geforce, gm107, gpu, graphics, gtx 750 ti, maxwell, nvidia, video
We finally saw Maxwell yesterday, with a new design for the SMs called SMM each of which consist of four blocks of 32 dedicated, non-shared CUDA cores. In theory that should allow NVIDIA to pack more SMMs onto the card than they could with the previous SMK units. This new design was released on a $150 card which means we don't really get to see what this new design is capable of yet. At that price it competes with AMD's R7 260X and R7 265, at least if you can find them at their MSRP and not at inflated cryptocurrency levels. Legit Reviews contrasted the performance of two overclocked GTX 750 Ti to those two cards as well as to the previous generation GTX 650Ti Boost on a wide selection of games to see how it stacks up performance-wise which you can read here.
That is of course after you read Ryan's full review.
"NVIDIA today announced the new GeForce GTX 750 Ti and GTX 750 video cards, which are very interesting to use as they are the first cards based on NVIDIA's new Maxwell graphics architecture. NVIDIA has been developing Maxwell for a number of years and have decided to launch entry-level discrete graphics cards with the new technology first in the $119 to $149 price range. NVIDIA heavily focused on performance per watt with Maxwell and it clearly shows as the GeForce GTX 750 Ti 2GB video card measures just 5.7-inches in length with a tiny heatsink and doesn't require any internal power connectors!"
Here are some more Graphics Card articles from around the web:
- MSI GTX 750 Ti Gaming Video Card Review @HiTech Legion
- NVIDIA GeForce GTX 750 Ti @ Benchmark Reviews
- ASUS GTX 750 OC 1 GB @ techPowerUp
- MSI GTX 750 Ti Gaming 2 GB @ techPowerUp
- NVIDIA GeForce GTX 750Ti the Arrival of Maxwell @HiTech Legion
- Palit GTX 750 Ti StormX Dual 2 GB @ techPowerUp
- The GTX 750 Ti Review; Maxwell Arrives @ Hardware Canucks
- Nvidia GeForce GTX 750 Ti vs. AMD Radeon R7 265 @ Legion Hardware
- MSI GTX750Ti OC Twin Frozr @ Kitguru
- NVIDIA GeForce GTX 750 Ti 2 GB @ techPowerUp
- NVIDIA GeForce GTX 750 Ti "Maxwell" On Linux @ Phoronix
- A quick look at Mantle on AMD's Kaveri APU @ The Tech Report
- Sapphire Radeon R9 Tri-X OC video card @ Hardwareoverclock
- AMD Radeon R9 290: Still Not Good For Linux Users @ Phoronix
- AMD Radeon R7 265 2GB Video Card Review @ Legit Reviews
- Sapphire Radeon R7 260X OC 2GB Graphics Card Review @ Techgage
- XFX Double Dissipation R9 280X @ [H]ard|OCP
What we know about Maxwell
I'm going to go out on a limb and guess that many of you reading this review would not have normally been as interested in the launch of the GeForce GTX 750 Ti if a specific word hadn't been mentioned in the title: Maxwell. It's true, the launch of GTX 750 Ti, a mainstream graphics card that will sit in the $149 price point, marks the first public release of the new NVIDIA GPU architecture code named Maxwell. It is a unique move for the company to start at this particular point with a new design, but as you'll see in the changes to the architecture as well as the limitations, it all makes a certain bit of sense.
For those of you that don't really care about the underlying magic that makes the GTX 750 Ti possible, you can skip this page and jump right to the details of the new card itself. There I will detail the product specifications, performance comparison and expectations, etc.
If you are interested in learning what makes Maxwell tick, keep reading below.
The NVIDIA Maxwell Architecture
When NVIDIA first approached us about the GTX 750 Ti they were very light on details about the GPU that was powering it. Even though the fact it was built on Maxwell was confirmed the company hadn't yet determined if it was going to do a full architecture deep dive with the press. In the end they went somewhere in between the full detail we are used to getting with a new GPU design and the original, passive stance. It looks like we'll have to wait for the enthusiast GPU class release to really get the full story but I think the details we have now paint the story quite clearly.
During the course of design the Kepler architecture, and then implementing it with the Tegra line in the form of the Tegra K1, NVIDIA's engineering team developed a better sense of how to improve the performance and efficiency of the basic compute design. Kepler was a huge leap forward compared to the likes of Fermi and Maxwell is promising to be equally as revolutionary. NVIDIA wanted to address both GPU power consumption as well as finding ways to extract more performance from the architecture at the same power levels.
The logic of the GPU design remains similar to Kepler. There is a Graphics Processing Cluster (GPC) that houses Simultaneous Multiprocessors (SM) built from a large number of CUDA cores (stream processors).
GM107 Block Diagram
Readers familiar with the look of Kepler GPUs will instantly see changes in the organization of the various blocks of Maxwell. There are more divisions, more groupings and fewer CUDA cores "per block" than before. As it turns out, this reorganization was part of the ability for NVIDIA to improve performance and power efficiency with the new GPU.
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