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Inside ASUS Radeon HD 7970 3GB DirectCU II TOP Graphics Card

Recently ASUS has revealed the most coolest and capable graphics card. This graphics card is actually based on new AMD “Tahiti” 28nm GPUs. The ASUS HD 7970 DirectCU II TOP uses a latest factory-overclocked core and 3GB of GDDR5. It will more cool, because the new technology DirectCU II has been used in this graphic card.


Radeon HD 7970 3GB DirectCU II

A dual fan thermal has designed with six copper heatpipes and a large dissipation area that leads to the lowest temperatures and quietest operation of any HD 7970 card. ASUS DIGI+ VRM 12-phase digital power delivery comes to graphics cards progress with Super Alloy Power components, while overclockers are bound to appreciate the affiliation of exclusive VGA Hotwire hardware overvolting and GPU Tweak software tuning. The new cards further support adapter-free AMD Eyefinity 6.

This graphic card is now available at Amazon for $655.20

What’s Inside The ASUS Radeon HD 7970 DirectCU II?

According to the ASUS

Stage One: Getting Inside.

This is the easy bit.

The card sits inside between two large wedges of foam:

ASUS has thrown in a replacement VRM heatsink to keep them cool (see the arrow). This extra is important for those extreme overclocking or watercooling the GPU only.

Break Out The Screwdriver! Taking Apart The DirectCU II.

The back metal protective cover comes off first:

Put it face down and remove the screws around the edge before the four around the GPU core in the middle. All these screws actually bolt into an aluminum bracing bracket that doubles up as a component heatsink for memory and VRMs on the front side. This means that unlike other custom card designs, the entire weight of the cooler is distributed across the whole PCB, keeping it straight. Below details exactly how it’s stacks up better than I can photograph:

There’s also another four screws at the back to remove (not the ones above the four display ports):

And off it pops. Be careful of the fan wire (bottom right). From here it’s easy to see the six heatpipes that cool the monster GPU:

More Than Just A Cooler: A Power Delivery Overhaul With DIGI+ VRM.

This is what half the fuss is about – the HD 7970 power hardware has been replaced with a similar DIGI+ digital power controller chip that regulates the power to the GPU and memory:

The DIGI+ chip replaces the SHE (Super Hybrid Engine) chip on existing DirectCU cards, although the HD 7970 still uses the same, upgraded Super Alloy Power hardware: MOSFETs, electrical chokes and solid capacitors. You can see a bit more detail about this tech in the YouTube video below. Keep an eye out on your favorite media sites in reviews soon, to see how this technology benefits the design.

A close-up of the SAP chokes:

Source: ASUS

[ttjad keyword=”graphics-cards”]

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