AMD Radeon HD 7790: Affordable DX11 Gaming - HotHardware

AMD Radeon HD 7790: Affordable DX11 Gaming

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We got our hands on a couple of Radeon HD 7790 cards for the purposes of this article, one from Asus and another from Sapphire.

As we mentioned on the previous page, reference Radeon HD 7790 series cards have GPUs clocked at 1GHz with 1GB of frame buffer memory clocked at 1.5GHz, for an effective data rate of 6Gbps. The Asus and Sapphire cards featured here, however, are both factory overclocked and differ from the reference design in a couple of ways.



 

 
The Asus Radeon HD 7790 Direct CU II

First up is the Asus Radeon HD 7790 Direct CU II. This card sports a 1075MHz GPU clock with 1GB of GDDR5 memory clocked at 1.6GHz (6.4Gbps data rate). As its name implies, the card sports a Direct CU II cooler, which is Asus’ way of saying that the heatsink’s copper heatpipes make direct contact with the GPU for better cooling performance. In fact, Asus claims 20% better cooling performance over reference models, with quieter cooling, too. Unfortunately, we don’t have a reference card on hand to verify this claim, but as you’ll see later, the Asus Radeon HD 7790 Direct CU II’s cooler clearly performs very well.

As you can see, the Asus Radeon HD 7790 Direct CU II’s cooler features two relatively large cooling fans that sit atop an array of cooling fins that extend way out past the card’s PCB. The PCB is only about 6.75” long, whereas the entire assembly—including the cooler and fan shroud—stretches to about 8.5”.

Outputs on the Asus Radeon HD 7790 Direct CU II consist of a pair of DVI outputs as well as single HDMI and DisplayPort outputs. Bundled with the card is a typical array of accessories and software, which includes a CrossFire bridge, a DVI-to-VGA adapter, and a copy of Asus’ excellent GPU Tweak performance tuning utility. We should point out that GPU Tweak supports over-clocking and over-volting on the Asus Radeon HD 7790 Direct CU II, which should please users who like to tinker. Time wasn’t on our side with this article though, so we don’t have overclocking scores to share just yet.



 

 
Sapphire Radeon HD 7790 1GB Dual-X OC

We also have the Sapphire Radeon HD 7790 1GB Dual-X OC on hand. Like the Asus card, Sapphire’s offering has 1GB of frame buffer memory, and it’s factory overclocked as well. In fact, it has the very same 1075MHz and 1.6GHz (6.4Gbps effective) GPU and memory clocks as the Asus card.

Also like Asus’ offering, the Sapphire Radeon HD 7790 1GB Dual-X OC has a custom dual-fan cooler with a relatively large array of heatsink fins, which are linked to a baseplate by a couple of thick copper heat-pipes. The Sapphire card, however, uses a longer PCB than the Asus Radeon HD 7790 Direct CU II, though the last inch and half or so of the board is devoid of any components.

The output configuration on the Sapphire Radeon HD 7790 1GB Dual-X OC is also similar to the Asus card, but Sapphire threw in a couple of additional items. Along with the same CrossFire bridge connector and DVI-to-VGA adapter, the Sapphire card also ships with an HDMI cable and dual-4-pin to single 6-pin PCIe power adapter.


Radeon HD 7790 Cards Are Coming From Asus, Gigabyte, HIS, MSI, PowerColor, Sapphire, XFX and Others

Sapphire and Asus are not the only ones readying custom Radeon HD 7790 cards. In addition to the reference designs slated to arrive soon, Gigabyte, MSI, HIS, PowerColor, XFX and others are working on Radeon HD 7790 cards, as well. The main features and specifications for a bunch of upcoming Radeon HD 7790 cards are listed in the image above.
 

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I think it's also worth mentioning that the 7850 is a quite excellent overclocker. At stock I think it's definitely not worth the extra $30, but once overclocking is taken into account, if you can afford the $30 you are crazy not to spend it (assuming you are comfortable with overclocking of course).

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tunaman7787:

I think it's also worth mentioning that the 7850 is a quite excellent overclocker. At stock I think it's definitely not worth the extra $30, but once overclocking is taken into account, if you can afford the $30 you are crazy not to spend it (assuming you are comfortable with overclocking of course).

 

I have to agree with you. Im running a MSI 7850 and the first thing I did was overclock it and it runs great. I actually used BF3, Far cry 3, and Metro 2033 as a bench to gauge about how my computer runs vs others. It does really well. The 7790 might be the more affordable option but like you said spending the extra few dollars or waiting till one goes on sale makes it worth it. Only advantage I see with the 7790 is newer architecture.

 

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Good reviews about new AMD Radeon 7790. I like it and that one is perfet for anyone who need bit better performance on D11 games.

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I think it's performance is right where it should be as a 7790. There is still room for a 7830 if AMD feels it's necessary.

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Solid performance her for the price.  What's interesting is that this is a new GPU for AMD.  Wondering if they'll be buffing out the high end soon!

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Dave_HH:

Solid performance her for the price.  What's interesting is that this is a new GPU for AMD.  Wondering if they'll be buffing out the high end soon!

I completely agree.  I saw last night that this was a new GPU, and considering the performance they were able to put out with this low end budget card, i'm really excited to see what's next.

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Dave_HH:
Wondering if they'll be buffing out the high end soon!

Also wondering what the response will be from mean green.

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I don't know about team green, but I think along with a 7830, there might be a 7890 and a 7930, plus 7990 based on this chip.

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I have been Looking for a reasonable upgrade to my graphics cards and this fits the bill quite nicely

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Geez, my video card is so outdated. I use a Radeon HD4650. Aside from letting me play most games at a lower resolution and medium settings, all it really allows me to do is watch Blu Ray movies on my computer. I seriously wish I could afford to upgrade but with 2 kids and another on the way, it's probably going to be at least another 5 years or so til I can upgrade. It would be so wonderful to win some sort of gaming computer giveaway. I've put all of my money over the last 6 years into my family. It would be great if some sort of higher power looked upon me with favor and chose me to win a gaming PC. ;-)

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