Dual GPU Kaveri APU vs....

Dimdab · Feb 8, 2014

Hi, I'm looking for a 350 dollarish upgrade path, and have been very interested in Kaveri

1. Does anyone have experience with Dual GPUs in Kaveri APUs? I was hoping to use an old HD6450, would those combined equal around a hd7750? Would i be able to use a HD6450 GPU with the new architecture or would I only be able to use an R7 model?

2. How much of a performance gain is Kaveri over the a10-6800k with both overclocked and Dual GPU with the HD6450?

3. Is there any difference between overclocking the 7700k vs. the 8500k? Mainly in the GPUs used

4. Should I be going for higher GB count in memory? or higher speed? or lower Cas Latency? To what point would the APU stop recieving significant benefit from increased memory?

5. Could anyone recommend anything more cost efficient for 350$ than what I have planned? Looking to replace CPU, GPU, Mobo and Memory

Any Help would be very much appreciated, The main focus on this build would be moderate gaming, the mantle system seemed interesting which is why i am more focused on Kaveri as oppposed to a fx-4350.

pcgaming98 · Feb 21, 2014

1. I dont have experience but you cant use the 6xxx series graphics cards in dual graphics with the Kaveri. To dual graphics, the integrated graphics of the APU and the discrete graphics card must have the same architecture. You can only dual graphics with an R7 model.

2. Kaveri doesn't have a HUGE performance gain over the Richland flagship processor but the technological gains are immense. And you wouldn't see any performance difference with using the HD6450 since the integrated graphics of the APU would shut down and your computer would run solely off of the HD6450.

3. There shouldn't be.

4. Go for both. The minimum is about 8 gigs of 1600 MHz RAM with a CAS Latency of 9. But you should get the fastest RAM possible for APUs, they love fast RAM. There's no limit to which performance gains stop showing when it comes to RAM speed, but I think the performance increases begin to get a little "less" at 1600 MHz and up.

5. You wont be able to get a good build with the Kaveri or Richland with $350, but I'll see exactly what I can do.

pcgaming98 · Feb 21, 2014

PCPartPicker part list: http://pcpartpicker.com/p/2XBbR
Price breakdown by merchant: http://pcpartpicker.com/p/2XBbR/by_merchant/
Benchmarks: http://pcpartpicker.com/p/2XBbR/benchmarks/

CPU: AMD A10-7850K 3.7GHz Quad-Core Processor ($184.99 @ Newegg)
Motherboard: ASRock FM2A88M-HD+ Micro ATX FM2+ Motherboard ($65.99 @ Newegg)
Memory: Crucial Ballistix Sport 8GB (2 x 4GB) DDR3-1600 Memory ($59.99 @ Microcenter)
Storage: Seagate Barracuda 500GB 3.5" 7200RPM Internal Hard Drive ($48.00 @ Amazon)
Case: NZXT Source 210 (Black) ATX Mid Tower Case ($29.99 @ Microcenter)
Power Supply: Corsair Builder 430W 80+ Bronze Certified ATX Power Supply ($39.99 @ Amazon)
Total: $428.95
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-02-21 18:12 EST-0500)

That was $429. The one with the Richland processor

PCPartPicker part list: http://pcpartpicker.com/p/2XBeu
Price breakdown by merchant: http://pcpartpicker.com/p/2XBeu/by_merchant/
Benchmarks: http://pcpartpicker.com/p/2XBeu/benchmarks/

CPU: AMD A10-6800K 4.1GHz Quad-Core Processor ($139.97 @ OutletPC)
Motherboard: ASRock FM2A88M-HD+ Micro ATX FM2+ Motherboard ($65.99 @ Newegg)
Memory: Crucial Ballistix Sport 8GB (2 x 4GB) DDR3-1600 Memory ($59.99 @ Microcenter)
Storage: Seagate Barracuda 500GB 3.5" 7200RPM Internal Hard Drive ($48.00 @ Amazon)
Case: NZXT Source 210 (Black) ATX Mid Tower Case ($29.99 @ Microcenter)
Power Supply: Corsair Builder 430W 80+ Bronze Certified ATX Power Supply ($39.99 @ Amazon)
Total: $383.93
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-02-21 18:14 EST-0500)

I think you should go with an A10-5800k Trinity if you want it below $350. But you'll only be able to dual graphics that with an old Radeon HD 6670, or a 7750.

CynicalAhole · Feb 21, 2014

The A10 7850 and an MSI board are $130 at Microcenter right now.

As for the dual graphics option, the A10 only supports DG mode on the R7 240 and R7 250. I was reading a lot about them before deciding to go the X4 760K and discrete graphics route. I don't recall which site I read it on, but they saw huge performance gains over the integrated R7 graphics in DG mode, but only slight gains over running the R7 250 on its own.

There's also the debate about whether to use the DDR3 or DDR5 version of the card if you intend to use DG mode. Some say that the disparity in memory speeds between the discrete card and the system memory will reduce DG performance, and recommend using the DDR3 version of the R7 250.

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Dual GPU Kaveri APU vs....

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