AMD's Young Turks - Radeon HD 6670 and 6570

Two Turks and a Caicos

Sapphire Radeon HD 6670 1GB GDDR5

Sapphire has decided to go with a dual-slot fan design instead of the reference design that has been making the rounds from AMD. Obviously, the manufacturer is targeting a different group of users with its Radeon HD 6670, with a seemingly buffed up cooler from Arctic Cooling. This is one card that's not for the HTPC market but it's your choice to use it if you can fit this in your intended system. Aside from the non-standard cooler, this Sapphire card comes with the standard clock speeds, which is 800MHz for the core and 4000MHz DDR for the 1GB GDDR5 memory.

The SRP for the Radeon HD 6670 may be US$99, but we found the Sapphire going for around US$97 at online retailers. Considering its third-party cooler, it does seem like a decent deal.

The Sapphire Radeon HD 6670 is a relatively short, stubby card which takes up two slots due to its larger, third-party cooler.

All the display outputs that you would need - DisplayPort 1.2, HDMI 1.4a and a dual-link DVI output.

Arctic Cooling provides the cooler for this card and to our ears, it's silent enough. We'll see if it manages to keep it cool.


HIS Radeon HD 6570 Silence 1GB GDDR5

HIS meanwhile, has decided to focus on the low-power and low TDP aspect of the Turks GPU and has outfitted its Radeon HD 6570 with a passive cooler. While the rear bracket may be a single-slot, the fins on this passive heatsink effectively takes up another slot besides the graphics card. So, you'll have to ensure that there's sufficient space for this graphics card. Unlike the reference design, which is low-profile, this is a full sized (height-wise), albeit short card.

The clock speeds are standard too, with its 650MHz core complemented by an effective memory frequency of 4000MHz with GDDR5 memory. Take note that HIS has a similarly passively cooled DDR3 version of the Radeon HD 6570 with 1GB of memory. That version uses a truly single-slot passive cooler, so it's an alternative if chassis space is an issue. We weren't able to get the retail price for this HIS Silence, but we expect the price to be within the SRP of US$79, with perhaps a slight premium for the passive cooling.

A huge chunk of fins and cold metal make up the passive cooler on this HIS Radeon HD 6570 Silence.

You may not be able to tell from this, but the heatsink on this card practically takes up two slots worth of space.

A closer look at the fins of the passive cooler.


HIS Radeon HD 6450 Silence 1GB GDDR5

The Radeon HD 6450 also gets the passive cooling treatment, distinguishing it from the reference design. We doubt that HIS is the only vendor taking this approach, as the low-profile, low-power nature of the Radeon HD 6450 makes it most appropriate for HTPC and quiet desktop configurations. With the exception of the heatsink, this HIS card is identical to the typical Radeon HD 6450, though this card is clocked at the lowest end of the spectrum for the Radeon HD 6450.

If you can recall from our specs listing, the Radeon HD 6450 can be clocked from between 625MHz to 800MHz for the core and it can come with a DDR3 or GDDR5 memory config. While HIS has gone with 1GB of GDDR5 memory, it is at a relatively slower 800MHz (or 3200MHz DDR equivalent) and the core clock of 625MHz is at the lowest possible spectrum. That should lower any expectations that you may have for this card, though we'll also be overclocking it later to find out the difference in performance.


HIS has replaced the standard cooler on the reference Radeon HD 6450 with its own passive version.

The low-end nature of this SKU means that VGA is still an option, along with DisplayPort and DVI.


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