Dual GPU: Performance Boost or Nonsense?
Even without the complexities of micro-stuttering, missing CrossFire profiles, and driver issues, we really don’t think that CrossFire makes much sense in this kind of build. Nevertheless, we gave it a shot anyway, if only to be thorough.
AMD recommends pairing our A10 up with a Radeon HD 6670 or 6570, so our passively-cooled HIS Radeon HD 6670 iSilence 5 was an ideal candidate.
In order to use the APU and a discrete graphics card in CrossFire, you have to enable the feature in your motherboard's UEFI. After booting back into Windows, CrossFire is good to go.
Graphics Benchmarks
Naturally, we weren't able to include the Intel-based systems in our CrossFire benchmarks, so the A10-5700 APU is all that’s left.

Bottom Line So Far
AMD's A10-5700 APU and Radeon HD 6670 in CrossFire are slower than a Radeon HD 7750, while using more power. The only reason to even consider such a setup would be to more completely utilize old hardware you already own. So much for that little experiment.
- Case: SilverStone Temjin TJ08-E
- Case: Technical Specifications And Features
- Case: Picture Gallery
- PSU: SilverStone Nightjar 400W Zero dBA
- Drives: Blu-ray Drive Installation
- Drives: Corsair Neutron GTX 480 GB
- Hard Choices: Motherboard And CPU
- CPU Cooler: SilverStone Heligon HE02
- CPU Cooler: Assembly And Installation
- Motherboard: A Challenging Installation
- Operation, Benchmark, And Bottom Line
- Adding Some Graphics Power
- Building A Passive Nvidia GeForce GTX 650
- CrossFire: A10-5700 And Radeon HD 6670
- Temperatures Under Full Load
- Installing An Ultra-Quiet Fan
- Automatically Switching On The Fan
- Small, Inexpensive, Silent Gaming Is Here



Much appreciated.
1. undervolting the CPU and GPU
2. underclocking and farther undervolting the GPU for 2D mode
3. hybrid cooling setup for GPUs where the fan only turns on at a high temperature (may require GPU BIOS editing depending on GPU model)
OPTIONAL (due to risk): removal of CPU IHS
But otherwise it's a neat article, personally I would sacrifice dead silence to use a cheaper HDD and perhaps more of those silent fans if I were to build one myself.
Much appreciated.
1. undervolting the CPU and GPU
2. underclocking and farther undervolting the GPU for 2D mode
3. hybrid cooling setup for GPUs where the fan only turns on at a high temperature (may require GPU BIOS editing depending on GPU model)
OPTIONAL (due to risk): removal of CPU IHS
The main issue is the GPU, and that would require a hybrid passive-active cooling solution much like was done for the CPU, but for some reason they didn't even try such a thing...
By the way, I own two of those Samsung Blu-Ray drives and the blue LED in the button is overly bright. I would NOT want to set that case on my desk.
great article toms