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The New AMD APU's like Kaveri that combine CPU and GPU into an APU? Can you help me figure out a basic question?

Laxin213 225 260 September 21, 2015 at 10:00 AM More Newegg Deals
Hello guys,


The Question:
If I go with a AMD APU (GPU and CPU in 1) like the AMD A10-7850K Kaveri, [newegg.com] that has Radeon R7 graphics chip built into it, do I have the same performance as having a devoted R7 GPU? Looking to maximize budget, if they are exactly the same, I'll take the money that was going towards the separate graphic card, and buy more RAM (2 build examples linked below)


Background Info:
I've been building systems on the side to help friends/family for about 10 years now. I do a few a year. Wife's friend is dual engineering and design major a few years into her program. She wants something that could run CAD as well as adobe suite. I think she currently had a pretty pricey PowerMac, but I'm not sure. Oh, and she wanted it in a mATX "cube type case". Here are 2 build lists of parts, budget is $600ish and she has the monitor.


Build 1 - Devoted GPU and 16GB Ram
[pcpartpicker.com]

Build 2 - APU and 32GB Ram [pcpartpicker.com]

5 Comments

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#2
The first thing you need to know is that the A series CPU's have a feature called Dual Graphics.. When you pair the CPU with a Discrete Graphics card of same architecture they link up like crossfire and give you a heavy performance increase over just one or the other. It's based on the RAM speed and generally from benchmarks I've seen it's 20-30 FPS increase.

Note: It is not the same as crossfire, but it's better than just one or the other.

The CPU's graphics itself will not be as good as just the graphics card. This is because the CPU must share the RAM from the board for it's graphics.

See here http://www.amd.com/en-us/innovati...l-graphics

I've been running an A10 6800k paired with a Radeon 6670 with dual graphics. I only play some league here and there but it's a pretty big difference with Dual Graphics.

If you don't have money for both the CPU and the CARD but are set on going AMD for the budget, I'd pick up an FX processor and graphics card.
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Last edited by Aitrus September 21, 2015 at 10:39 AM
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Joined Apr 2004
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#3
Quote from Aitrus View Post :
The first thing you need to know is that the A series CPU's have a feature called Dual Graphics.. When you pair the CPU with a Discrete Graphics card of same architecture they link up like crossfire and give you a heavy performance increase over just one or the other. It's based on the RAM speed and generally from benchmarks I've seen it's 20-30 FPS increase.

Note: It is not the same as crossfire, but it's better than just one or the other.

The CPU's graphics itself will not be as good as just the graphics card. This is because the CPU must share the RAM from the board for it's graphics.

See here http://www.amd.com/en-us/innovati...l-graphics

I've been running an A10 6800k paired with a Radeon 6670 with dual graphics. I only play some league here and there but it's a pretty big difference with Dual Graphics.

If you don't have money for both the CPU and the CARD but are set on going AMD for the budget, I'd pick up an FX processor and graphics card.
PS: I was going to recommend an AMD processor on their site (newegg) but when I click AMD processors I get a page that says there are 0 results. I think newegg site is fudged right now.

If you live near a Microcenter you should check out their AMD bundles.

In any case I was going to recommend this processor which is highly rated.
http://www.microcenter.com/produc..._Processor
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Last edited by Aitrus September 21, 2015 at 10:46 AM
#4
I was unaware of the dual graphics feature, which sounds awesome, but as someone that recently looked into some APU chips I can give you my thoughts.

The A series chips sound awesome and do give a graphics boost over the embedded graphics of the Intel I series (namely HD 3000) but they fall short in terms of CPU power to the point that the graphics gains are not worthwhile. The HD 4000 chips are on par with the APU performance anyways.

If you are building a machine and that dual graphics feature looks worthwhile, then go for it. I have found that the AMD processors are not priced well enough to bother and end up performing worse.
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#5
Quote from Pedantyc View Post :
I was unaware of the dual graphics feature, which sounds awesome, but as someone that recently looked into some APU chips I can give you my thoughts.

The A series chips sound awesome and do give a graphics boost over the embedded graphics of the Intel I series (namely HD 3000) but they fall short in terms of CPU power to the point that the graphics gains are not worthwhile. The HD 4000 chips are on par with the APU performance anyways.

If you are building a machine and that dual graphics feature looks worthwhile, then go for it. I have found that the AMD processors are not priced well enough to bother and end up performing worse.
This is correct.
The AMD integrated graphics (on the CPU) is far better than Intels integrated HD graphics (on their CPU's). In terms of raw processing power the Intels will always perform much better (With the exception of overclocking in some cases). Keep it mind it can be up to 2-3x the cost of an AMD CPU. In some cases it also boils down to milliseconds of a performance difference.

It really just depends on your budget and what you will be using it for.

For actual benchmarks and comparisons check out http://cpuboss.com/
Here's an idea for you with 2 comparable products.
http://cpuboss.com/cpus/Intel-Cor...-A10-7850K

If you had the money, buying an intel i series with a discrete card will blow anything amd has out of the water, especially if it is a recent i series.
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#6
2D CAD and most of Adobe's programs aren't that GPU intensive.

3D CAD and Adobe Premiere, and VERY large Photoshop files are more GPU intensive.
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