AMD Radeon HD 7790: Affordable DX11 Gaming - HotHardware

AMD Radeon HD 7790: Affordable DX11 Gaming

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A few weeks back, the enthusiast community was abuzz after news broke that AMD’s Radeon HD 7000 series would remain “stable throughout 2013” and would be the company’s focus “for quite some time”. The wording of the initial news made it sound like AMD wouldn’t be releasing any new GPUs for the rest of the year and that it would further differentiate its offerings with only new game and software bundles.

AMD convened a conference call to try and quell the rumors and better explain the company’s position at the time, but short of saying there were some new products in the pipeline, not much was said to clarify the situation. Well, here we are, about a month out from the initial breaking of that news, and AMD is ready with a new mainstream graphics card, which features a brand new GPU.

Today AMD is taking the wraps off of the new Radeon HD 7790, a mainstream GPU designed to fill the gap in the company’s current graphics card lineup between the Radeon HD 7770 and HD 7850. The features, specifications, and details of the new Radeon HD 7790 GPU are below, with an array of benchmarks to follow...


The AMD Radeon HD 7790 Reference Card

AMD Radeon HD 7790
Specifications & Features

Above, we have the main features and specifications of the newly updated Radeon HD 7700 series. As you can see, the Radeon HD 7790 features a larger GPU with more stream processors and texture units than the 7750 and 7770 and double the geometry performance per clock, too. Pixel fillrates are similar, and all of the cards feature a 128-bit memory bus, but the Radeon HD 7790’s frame buffer will be clocked significantly higher (6Gbps vs. 4.5Gbps), which results in much more memory bandwidth.

The GPU featured on the Radeon HD 7790 is codenamed “Bonaire XT”. It is comprised of 2.08 billion transistors, has a die size of 160mm2, and is manufactured on TSMC’s 28nm process node. The Bonaire XT GPU is based on the same Graphics Core Next architecture of previously-introduced Radeon HD 7000 series cards and offers full support for DX 11.1.

There are a total of 896 stream processors in the GPU, arranged in 14 compute units with 64 SPs each. Like the Radeon HD 7900 / 7800 series, there are dual geometry and tessellation engines in the Radeon HD 7790 GPU, which doubles the primitive rate of the Radeon HD 7770 and 7750. There are 56 texture units, 16 ROPs in the Bonaire XT, and memory is connected via a 128-bit interface.

Radeon HD 7790 reference clocks call for a 1GHz GPU with 1.5GHz (6.0Gbps effective) memory. At those clocks, the Radeon HD 7790 offers up to 1.79 TFLOPS of compute performance, with texture and pixel fillrates of 56GT/s and 16GP/s, respectively, as well as 96GB/s of memory bandwidth.

In addition to beefing up the geometry and tessellation engines and upping the number of stream processors and texture units in the 7790 versus previous Radeon HD 7700 series cards, AMD also made some enhancements to its PowerTune technology with the Radeon HD 7790.

Whereas previous Radeon HD 7000 series cards with support for Boost offered four dynamic power management states, the Radeon HD 7790 has eight. The additional DPM states help ensure that the GPU is using optimal voltage at a given clock state and ultimately enables higher engine clock speeds. Switching DPM states happens in as quickly as 10ms and is based on GPU activity and current and thermal management limits.
 

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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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