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Testing Participants

Palit GeForce GTX 770 JetStream 2GB

The GeForce GTX 770 JetStream 2GB card from Palit is shipped in a huge box painted black and gold. Some basic information about the product can be found on the front of the packaging. Nvidia’s technologies are described on the back of the box.

 

The top of the box can be flipped open to reveal the card through a plastic window. You can also find a detailed description of the benefits of Palit's exclusive cooling system here.

The accessories include a power adapter, an HDMI->DVI adapter, a DVI->CRT adapter, an installation guide and a CD with drivers and utilities.

There are no extras in the box, but Palit has never been among those who indulge their customers with freebies. The Palit GeForce GTX 770 JetStream 2GB is manufactured in China and costs $429, which is $30 more expensive than the recommended price of the GTX 770. The warranty period is 2 years.

The new card from Palit has an unconventional appearance. We've seen coolers with three fans before, but the central fan here is larger than the other two and is additionally edged with golden plastic inserts, producing a rather attractive image:

The card is 285x129x49 millimeters, so it is not only 18 mm longer but also 10 mm thicker than the reference GeForce GTX 770. You should note this if you're going to build a SLI tandem out of two such cards.

The selection of video interfaces is perfectly standard: dual-link DVI-I and DVI-D ports, an HDMI 1.4a, and a DisplayPort 1.2.

Two MIO connectors for combining two, three or even four graphics cards into a SLI subsystem can be found in their conventional location.

 

The Palit GeForce GTX 770 JetStream 2GB is equipped with one 8-pin and one 6-pin power connector. Its specified power draw is 229 watts, which is 1 watt less than required by the reference GeForce GTX 770 despite the pre-overclocked GPU. Does it mean that Palit has managed to develop a more economical PCB? Well, the PCB differs from the reference design indeed:

Instead of the standard 5+1+1 power system, the Palit GeForce GTX 770 JetStream 2GB has eight power phases, based on solid-state DrMOS transistors, for the GPU and a couple of phases for the graphics memory and PLL.

The GPU power system is managed by an eight-channel controller ON Semiconductor NCP 4208.

So, the power system has been improved to ensure more stability at increased clock rates. Overclockers will also appreciate the fact that the card offers check points on the reverse side of the PCB to let you accurately measure GPU, memory and PLL voltages.

The 28nm GK104 die is revision A2 and was manufactured in Taiwan on the 13th week of 2013.

Its base clock rate is increased to 1150 MHz in 3D applications (+10%), reaching up to 1202 MHz in Boost mode. During our tests, at the maximum Power and Temperature targets, the GPU clock rate would peak up to 1254 MHz. In 2D applications the GPU clock rate is dropped to 135 MHz and its voltage is lowered from 1.2 to 0.85 volts.

Like the reference Nvidia GeForce GTX 770, the Palit GeForce GTX 770 JetStream comes with 2 gigabytes of GDDR5 memory in eight FCBGA-packaged chips soldered to the face side of the PCB. These are K4G20325FD-FC28 chips from Samsung Semiconductor.

 

 
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