Palit GeForce GTX 780 Super JetStream 3GB (NE5X780T10FB-1100J)
Palit Microsystems offers three GeForce GTX 780s: a copy of the reference card, a JetStream series model, and a Super JetStream model. The latter is going to be covered here.
The huge cardboard box is designed in Palit’s traditional style. The card’s model name, memory amount and technologies are listed on the front of the packaging. On the back, there is a detailed description of Nvidia innovations and system requirements for the GeForce GTX 780.
The box has a flip-back cover, so you can take a look at the card through a plastic window and read about its key features.
The accessories aren’t numerous for a top-class product: DVI->D-Sub and HDMI->DVI adapters, one power cable, a software CD, a brief installation guide, and a sticker.
The Palit card is manufactured in China and comes with a 2-year warranty. We couldn’t find out its recommended price.
The Palit GeForce GTX 780 Super JetStream looks heavy. Its face side is covered with a cooling system that has a plastic frame with two gold-colored inserts. The central fan is larger and has a translucent impeller. The other two fans have ordinary black impellers.
The graphics card is thicker than the reference GeForce GTX 780 at 280x119x51 mm, so in a SLI configuration it has to be installed into the bottom PCIe slot (or the mainboard must have two PCIe slots far apart from each other).
The Palit version is no different from the reference sample in terms of video, MIO and power connectors:
The GeForce GTX 780 Super JetStream features an original PCB:
The 8-phase GPU voltage regulator is based on DrMOS transistors:
It is managed by an NCP4208 controller:
There are also two power phases for the memory chips.
The PCB has three check points for measuring GPU, memory and PLL voltages.
The OCP Unlock feature you can see nearby seems to be used to remove any limitations on voltages, power targets and frequencies. So, it looks like we have a good toolset for extreme overclocking here, although Palit has never positioned itself as a brand for hardcore overclockers.
The GPU of the Palit card was manufactured on the same week as the MSI’s. It is revision A1, too.
Its frequencies in 3D mode are pre-overclocked by 13.6% to 980/1033 MHz. The ASIC quality of the chip is 66%.
The card’s graphics memory is pre-overclocked as well. Instead of 6008 MHz, it works at 6200 MHz. These are the same Samsung chips as we've seen on the MSI:
Here are the specifications of the super card from Palit:
The cooling system consists of three separate components: a plastic frame with three fans, a dual-section GPU heatsink, and a steel heat-spreader on the memory chips and power components.
The steel heat-spreader envelops the PCB like a kind of thermal armor that has additional fins on the transistors.
The GPU heatsink consists of two sections and has five copper heat pipes, 6 mm in diameter. Two of them pierce the main section that has a copper base. The other three service the auxiliary section of the heatsink.
There’s a lot of aluminum fins soldered to the heat pipes. The cooler is neatly assembled and rather heavy.
There are three fans cooling the heatsink. The central fan has a diameter of 92 mm and a highlighted translucent impeller. The two other fans are only 80mm in diameter.
All of them are manufactured by Power Logic, run on fluid dynamic bearings and support PWM-based regulation. Their speed varies from 800 to 2800 RPM.
Palit’s cooler is no less efficient than MSI’s. With the fans regulated automatically (1580 RPM), the GPU is 77°C hot. It’s the same temperature as with the MSI, but the Palit’s GPU works at a higher clock rate.
Automatic fan mode
Maximum fan speed
At the maximum speed of 2750 RPM the GPU is somewhat colder at 60° than on the MSI card. That’s just an excellent result.
Unfortunately, the Palit was not as good in our overclocking experiments as the MSI. We only managed to increase its GPU and memory clock rates by 65 and 1200 MHz without compromising on stability or image quality.
The resulting clock rates were 1045/1098/7400 MHz.
The GPU clock rate would peak up to 1150 MHz, which is a mere 13 MHz lower than the peak GPU frequency of the overclocked MSI. It must be noted that the temperature and fan speed of the Palit card didn't change when it was overclocked.
It is the same 77°C at 1570 RPM.