Introduction

The GTX580-HS heatsink is designed to cool surface mount components (memory, and voltage mosfets) on nVidia 's GeForce™ GTX580 series graphics cards (P1261 reference design).

 

The product is designed to be installed in conjunction with our MCW60, 80 and 82 VGA waterblocks and it allows the highest possible stable overclocks of these high-end graphic cards while keeping them cool and quiet. For high-overclock applications where maximum voltage is added to the card, an optional slow speed (quiet) 80mm fan can be added to complement cooling of the power MOSFETS, resulting in up to 30% drop in these components temperature compared to stock cooling (see actual temperature data below). 

The performance advantage of  hybrid cooling which consists in cooling the GPU with a universal waterblock in combination with a heatsink compared to using a full-cover water-block solutions is well known among enthusiast users: improved thermal dissipation at the GPU level thanks to Swiftech's Diamond Pin Matrix and a better TIM joint, and less heat dumped into the liquid cooling loop coming from memory, and power MOSFETS since they remain air cooled. In addition, this combination provides a complete solution that is more economical than full-cover waterblocks because the GPU waterblock can be re-used over time with different VGA cards.

The heatsink is a custom Aluminum extrusions, and it is precision CNC machined to allow optimum TIM joints with the hottest components such as the voltage regulator modules, where high performance thermal grease is to be used. Less heat intensive components such as memory receive pre-applied thermal pads, as shown below.

Pictures Gallery

• Environment & methodology:
  • Open bench
  • Temperature probe affixed to back of the PCB directly behind the Power Mosfets
  • Load application: Furmark full screeen, 1920x1080, extreme burn mode, duration 30mn
  • Ambient temp: 24 °C +/- 1 °C  (74 °F)
  • Stock speed & voltage
• Passive mode (no additional cooling fans): 70 °C +/- 1 °C  (158 °F)
• With optional Sunon KD1208PHB1 80x15mm fan, rated at 3300rpm, 35cfm & 40dbA fan (noticeably audible):  40 °C +/- 1 °C  (104 °F)
• With optional Hiper HFF-1G08G-UV 80x5mm fan, rated at 2000rpm, 21cfm & 19dbA fan (ultra quiet): 50 °C +/- 1 °C (122 °F)

• Material: black anodized aluminum extrusion
• Dimensions (Inch): 9 3/8 " (L) x 3 5/8" (W) x .7" (H)
• Dimensions (Metric): 238mm (L) x 92mm (W) x 18mm (H)
• Weight: 10.6 oz (302 g)
• Installation: high thermal conductivity pad for memory and direct-touch for power MOSFETS (Arctic Ceramique included).
• Pre-existing mount holes for optional 80mm fan

How to check for compatibility?

The nVidia reference design number can be usually be found in a code located below or next to the nVidia® logo, as can be seen below; in the case of this particular heatsink, the code to look for would be "1261".