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MSI Radeon HD 7790 OC 1GB (R7790-1GD5/OC)

MSI offers as many as four Radeon HD 7790s with different clock rates and memory amounts. We’ve got the R7790-1GD5/OC model which features factory overclocking but is only equipped with 1 gigabyte of memory.

Besides the model name and key product features, you can see a picture of some mysterious thing on the front of the box. The thing has the name of the well-known MSI Afterburner utility on it.


We’ve got the same entry-level accessories here:

Manufactured in China, the card comes with a 3-year warranty at a retail price of only $130.

The MSI Radeon HD 7790 OC is the smallest card in this review, measuring 188x110x36 mm. Its cooling system is a mere 10 mm larger than the PCB on two sides.

The video outputs are standard but the DVI connectors are blue here.

The MIO and 6-pin power connectors are standard as well, so we won’t show you their photo again.

The MSI card uses the reference PCB design and features high-quality Military Class III components that comply with the American military standard MIL-STD-810G. So we can see here solid-state capacitors with ultra-low resistance and 10-year service life as well as Super Ferrite Chokes with 10% higher energy efficiency and 30% higher current capacity compared to ordinary chokes.

It’s nice that components MSI used to install on hi-end products are now available on entry-level products as well.

MSI has no power to tweak the GPU, though, so we have the same Bonaire chip manufactured on the 7th week of this year. It is without a protective frame again.

It is pre-overclocked to 1050 MHz, which is a lower frequency compared to the three previous products. The ASIC quality of the chip is 70.6%.

There is 1 gigabyte of onboard memory in the same Hynix chips as we can see on the other graphics cards in this test session:

The memory frequency is standard, so the MSI Radeon HD 7790 OC has the same specs as the reference card except for the GPU clock rate:

The MSI has a simple cooler: a small aluminum heatsink pierced by two 6mm heat pipes with direct-touch technology. The whole thing is cooled by a 94mm impeller with curved blades.


These special Propeller Blades are supposed to generate 20% higher air flow compared to ordinary impellers. The speed of the fan is PWM-regulated in a range of 1500 to 3000 RPM.

Despite its simplicity, the cooler is quite efficient. With its fan regulated automatically, it kept the GPU temperature below 60°C.

Auto fan mode

Maximum fan speed

At the maximum speed of 2910 RPM, the GPU was 54°C hot. Running a little ahead, we can tell you that it’s the best result in this test session.

The card has high overclocking potential. We managed to speed up its GPU by 190 MHz and its memory by 1120 MHz.

Thus, the MSI has the best overclocking result overall: 1240/7120 MHz.

The overclocked card had a 4°C higher temperature while its fan accelerated by about 100 RPM.


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