Showing posts with label Video. Show all posts
Showing posts with label Video. Show all posts

Monday, July 29, 2013

EVGA GeForce GTX 780 Superclocked ACX Cooling Video Card Review

Legit Video Card Reviews

When we reviewed the NVIDIA GeForce GTX 780 video card last month we were impressed by what what it could do and we just had the NVIDIA reference design on-hand to come to that conclusion. Today, we will be looking at our first add-in board partner card, the EVGA GeForce GTX 780 3GB Superclocked with ACX cooling. This card retails for $659.99 shipped and features higher clock speeds and a greatly improved cooling solution. Not bad, considering it retails for only $10 more than the base model!

evga-gtx780-acx-angle

When you first look at the EVGA GeForce GTX 780 Superclocked with ACX cooling video card you can see that it is certainly not using the reference cooler. EVGA has developed a new GPU cooling technology in-house called Active Cooling Extreme or ACX for short. This cooler will be available on both EVGA GeForce GTX 770 and 780 series cards, so you'll be hearing about this cooler a bunch in 2013!

EVGA GeForce GTX 780 w/ AVX Cooling Key Features:

Ultimate GPU Cooling – 15% average lower GPU and Memory temperatures give you the low temperatures needed for extreme overclocks, and with GPU Boost 2.0, it ensures your card maintains the maximum boost clock possible.No Compromise Heatsink Design – An increase of 40% in heatsink fin volume distributes heat evenly and efficiently.Low Noise Levels – The dual fan design dramatically increases airflow, meaning the fans only need tos pin at a much lower RPM, reducing noise levels significantly. In fact, it is 15% quieter on average!Double Ball Bearing Design – The EVGA ACX cooler features a double ball bearing design, meaning the fans have an average lifespan of 12 Years! This is 4X longer than the competitors sleeve bearing fans.Superior Blade Design – EVGA even went as far as crafting each individual fan blade with the utmost in quality. The fan blades on the EVGA ACX cooler are 700% stronger and weigh 25% less than competitor’s versions. This makes the fans 20% more efficient by requiring lower power levels.Dual Slot Design – No need to worry about bulky heatsink designs that cover unnecessary PCI-E lanes, the EVGA ACX cooler is a dual slot design, the optimal size for all forms of NVIDIA SLI.Dual Cooling Subsystems – Minimizing air turbulence between fans, this makes sure the airflow is distributed evenly, and reduces noise level.Reinforcement Baseplate – This helps to maintain a straight PCB, and helps lower mosfet temperatures by 7% and memory temperatures by 15%.

evga-gtx780-acx-s

Some of you might not know what the NVIDIA GeForce GTX 780 reference card looks like, so here is a shot of the NVIDIA GeForce GTX 780 reference card with it's single fan blower style GPU cooler and the EVGA GeForce GTX 780 Superclocked w/ ACX Cooling that we'll be looking at today. This is a "Superclocked" card, so right off the bat you should know that it has been overclocked from the start. The EVGA GeForce GTX 780 Superclocked with ACX cooling comes with a base clock of 967 MHz a boost clock of 1020 MHz. The NVIDIA GeForce GTX 780 reference card is clocked at 863 MHz base and 902 MHz boost, so this is a 12-13% clock increase on the 2304 CUDA Cores!  EVGA opted not to overclock the 3GB of GDDR5 memory and it operates at 6008 MHz (effective) like the reference card.

evga-gtx780-acx-back

EVGA also didn't touch the Printed Circuit Board (PCB) and used the same exact PCB as the NVIDIA reference design. This means it features single 8-pin and 6-pin PCIe power connectors to supply enough power to the 250W TDP card and a pair of SLI connectors for 3-way SLI support. The EVGA GeForce GTX 780 Superclocked w/ ACX is 10.5" in length.

evga-gtx780-acx-io

Display outputs include two dual-link DVIs, one HDMI and one DisplayPort 1.2 connector. This video card easily supports 4K resolution monitors and supports up to four monitors concurrently. This is great for those wanting to run NVIDIA Surround or NVIDIA 3D Vision Surround technology.

Let's move along and take a closer look at the EVGA ACX Cooler!  




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Saturday, July 6, 2013

NVIDIA GeForce GTX 780 Video Card Review

Legit Video Card Reviews

GeForce GTX 780 Reference Card

When NVIDIA introduced the GeForce GTX Titan back in February, they unleashed a video card that quickly became recognized as the fastest single-GPU on the desktop market. The GeForce GTX Titan uses the GK110 'Kepler' GPU along with 6GB of GDDR5 memory to show gamers how current game titles are meant to be plated. No doubt the GeForce GTX Titan runs circles around the competition, but it also costs $999 and that is out of reach for most mainstream and enthusiast gamers. Shortly after the NVIDIA GeForce GTX Titan was released we began hearing rumors of a less costly card with fewer stream processors and less memory to help fill the huge price gap between the GeForce GTX 680 at $449 and the GTX Titan at $999. The rumor mill was calling that card the GeForce GTX Titan LE, but it appears that was wrong. NVIDIA had other plans and introduced the GeForce GTX 780 last week, which is the first GeForce 700 series graphics card to be released!

titan-gtx780

If you take a look at the image above and compare the GeForce GTX Titan (top) to the GeForce GTX 780 (bottom) you should be able to figure out where this is all headed. The NVIDIA GeForce GTX 780 might be the first video card to be released in the GeForce GTX 700 series, but it's not really ground breaking. It's basically a GeForce GTX Titan with some things on the GK110 GPU disabled and half the memory. The best part about the new NVIDIA GeForce GTX 780 is that it comes with a suggested retail price of $649. That makes it 35% less than the cost of a GeForce GTX Titan. The question is what did they disable?

Here is a quick chart that breaks down the key specifications for you along for those that like to see everything in a table. The GeForce GTX 780 has base clock of 863MHz and a Boost click of 902MHz, which is higher than the clocks on a Titan, but notice that it has fewer stream processors (CUDA Cores). The GeForce GTX 780 has two SMs (Streaming Multiprocessors) disabled, which means it has 2304 CUDA cores versus 2688 on Titan. The number of texture units also decreases from 224 on Titan to 192 on the GeForce GTX 780.

NVIDIA reduced the memory down to just 3GB on the GTX 780, but notice that the clock speed is still 6008MHz (effective) and connected with a 384-bit memory interface.  This means the memory bandwidth is is still 288.4 GB/s and the peak texture fill rate is 165.7 GTexels/s. The reduction of memory might be of a concern to some gamers, so we'll be addressing those concerns by benchmarking the GeForce GTX Titan, GTX 780, GTX 680 and GTX 580 at 5760x1080, 2560x1600 and 1920x1080. This wide range of resolutions should cover the frame buffer performance questions that many have. We believe that Ultra HD resolutions are where gaming is headed, so we will be headed in that direction with our high-end GPU reviews.

NVIDIA_GeForce_GTX_780-Front

The NVIDIA GeForce GTX 780 video card shares the same general PCB design and the identical GPU cooler. The GeForce GTX 780 looks sharp thanks to a silver aluminum casing for the cover and a clear polycarbonate window that allows you to see the vapor chamber and dual-slot heatsink used on the card.

NVIDIA_GeForce_GTX_780-Top

The GeForce GTX logo on the edge of the board is also LED backlit just like the one on the GeForce GTX 690 and Titan. NVIDIA suggests a 600W or greater power supply for the GTX 780 and you'll need both an 8-pin and a 6-pin PCIe power connector for proper operation.

NVIDIA_GeForce_GTX_780-Back

The back of the NVIDIA GeForce GTX 780 doesn't have a backplate and you can't see any of the GDDR5 memory ICs that make up the cards 3GB frame buffer.

samsung GDDR5 ICs

NVIDIA is using Samsung K4G20325FD-FC03 GDDR5 memory chips on the GeForce GTX 780.

NVIDIA GeForce GTX Titan Video Card Bracket

Display outputs include two dual-link DVIs, one HDMI and one DisplayPort 1.2 connector. This video card easily supports 4K resolution monitors and supports up to four monitors concurrently. Keep in mind that the GeForce GTX 580 supported just two monitors, so NVIDIA has really been improving their monitor support and display connectivity options over the past couple years.

Now that we have the basics covered, let's take a quick look at the test setup and move along to the game benchmarks!




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