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Forum: Hardware Chat Room
Thread: AMD A10 - 7800 CPU |
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Thread Status: Active Total posts in this thread: 8
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cehunt
Senior Cruncher CANADA Joined: Oct 10, 2011 Post Count: 172 Status: Offline Project Badges: 
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I have an opportunity to purchase a new system (Asus M32BF-RS1-CB) at a discount using the AMD A10-7800 processor.
How many project work units would this processor be capable of processing? The documentation I am reading is 4. Is this correct? Clive |
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adriverhoef
Master Cruncher The Netherlands Joined: Apr 3, 2009 Post Count: 2346 Status: Offline Project Badges: 
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The AMD A10-7800 is indeed a quad core processor, cehunt:
----------------------------------------http://cpuboss.com/cpus/Intel-Core-i7-4770-vs-AMD-A10-7800 It has 4 cores / 4 threads: http://www.cpu-world.com/CPUs/Bulldozer/AMD-A10-Series%20A10-7800.html [Edit 2 times, last edit by adriverhoef at May 31, 2016 12:54:52 AM] |
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Kasey Domer
Cruncher United States Joined: Jul 24, 2013 Post Count: 44 Status: Offline Project Badges: 
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Hey, Clive,
----------------------------------------Yep, it's a quad-core processor. The number of simultaneous WUs a CPU can process is equal to the number of threads. Since AMD CPUs don't have hyperthreading or multithreading (yet), the number of threads is the same as the number of cores. Personally, I don't think AMD's APUs are very good for crunching (I'd go with an FX series chip or Intel), but depending on the discount, the cheap price might be worth it. Happy crunching! Kasey  Crunchers: 1: Xeon E5-2695 v3 @ 2.5GHz turbo (14C/28T) 2: Xeon E5-2658 v3 @ 2.3GHz turbo (12C/24T) 3: Ryzen 7 1700 @ 3.675GHz OC (8C/16T) 4: Core i7-4700MQ @ 3.2GHz cTDP up (4C/8T) |
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Falconet
Master Cruncher Portugal Joined: Mar 9, 2009 Post Count: 3315 Status: Offline Project Badges: 
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Hey, Clive, Yep, it's a quad-core processor. The number of simultaneous WUs a CPU can process is equal to the number of threads. Since AMD CPUs don't have hyperthreading or multithreading (yet), the number of threads is the same as the number of cores. Personally, I don't think AMD's APUs are very good for crunching (I'd go with an FX series chip or Intel), but depending on the discount, the cheap price might be worth it. Happy crunching! Kasey The cores in that APU are better than any of the cores in the current FX desktop line. Latest FX is the Piledriver (2012) while the 7800 is Kaveri (2014). Diference is about 10-15% faster, better energy efficiency, etc, IIRC. So unless he wants more cores, like the FX-6300, the A10-7800 is a good way to go. Or he can wait until Zen (I know I am :D)  - AMD Ryzen 5 1600AF 6C/12T 3.2 GHz - 85W - AMD Ryzen 5 2500U 4C/8T 2.0 GHz - 28W - AMD Ryzen 7 7730U 8C/16T 3.0 GHz |
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fuzzydice555
Advanced Cruncher Joined: Mar 25, 2015 Post Count: 89 Status: Offline Project Badges: 
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I used AMD CPUs exclusively for many years, one could say I am a fan.
----------------------------------------They are good for some workloads. For crunching, I would advise you NOT to get an AMD CPU. First of, it has 4 modules, which basically means 4 integer cores and 2 floating point cores. It is much like intel's hyper threading and it has nowhere near the performance of a true 4 core CPU. I tested the newest x4 845 (65W Excavator) and energy efficiency is still much worse than any reasonably new intel CPU. The A10 7800 is even less efficient. The FX series is even worse than both of these CPUs. Even a 5 year old i7 2600s will get you much better efficiency (and more points overall!), than any of AMDs current offerings. If you need a light gamer, which can also crunch, then go ahead. If crunching is the main job, the A10 is not a good choice.  |
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Falconet
Master Cruncher Portugal Joined: Mar 9, 2009 Post Count: 3315 Status: Offline Project Badges:
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Yeah, I bought both my A8-6500 and the A10-5700, good CPU part and good GPU parts. I am happy with them.
----------------------------------------You can see the energy they use per hour in my signature (100% CPU load with BOINC on all cores) - AMD Ryzen 5 1600AF 6C/12T 3.2 GHz - 85W - AMD Ryzen 5 2500U 4C/8T 2.0 GHz - 28W - AMD Ryzen 7 7730U 8C/16T 3.0 GHz [Edit 1 times, last edit by Falconet at May 31, 2016 6:06:21 PM] |
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cehunt
Senior Cruncher CANADA Joined: Oct 10, 2011 Post Count: 172 Status: Offline Project Badges:
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Thank you all for contributing your knowledge and impartial advice.
I thought I would replace my Dell 8700 which died due to the power supply which gave up the ghost. The CPU in it is a Intel 8200. The CPU not hyper-threaded and so it only crunches 4 WUs at a time. At Staples, there is a Asus M32BF desktop system on sale at a $100 discount starting today. Sale price $499. I thought one of its tasks would be crunching for WCG but I will heel the advice everyone gave me here. THANK YOU! |
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Kasey Domer
Cruncher United States Joined: Jul 24, 2013 Post Count: 44 Status: Offline Project Badges:
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For $500, if you don't care about really strong on-board graphics, you could build something around a Core i5-4570 or i5-6400/6500. Although the on-board graphics aren't as strong as AMD APUs, any of those CPUs will get you around 50-70% more crunching than the A10-7800, depending on which of the i5s you choose, at least if benchmarks like Cinebench, Geekbench, and Passmark are to be believed.
----------------------------------------I used pcpartpicker [dot] com to build you a mock PC. Core i5-6400 - $180 on SuperBiiz Gigabyte GA-B150M-D3H MicroATX motherboard - $67.99 incl. shipping on Newegg (nothing fancy, but it's from a reputable brand and gets the job done). Kingston HyperX Fury Black 8GB (2 x 4GB) DDR4-2133 RAM - $35 on Newegg Samsung 750 EVO 120GB SSD - $52.99 on SuperBiiz Seagate Barracuda 1TB 7200RPM HDD - $47 on OutletPC NZXT S340 ATX/MicroATX mid-tower case - $65 on Microcenter EVGA 500B 80+ Bronze 500W PSU - $43 on SuperBiiz That totals around $480, including shipping costs, and not including mail-in rebates some of the sites are offering right now. If you don't need as much storage and/or don't care about an SSD, you can nix/change either of those options and save even more money. If you're not afraid of PC internals and don't mind waiting for things to ship from different stores (all the parts I listed are from brands and stores that I trust and have had good experiences with), you can build yourself something with a lot more CPU power than the ASUS you mentioned (and it'll have better quality components and a better PSU, too!) The parts I listed certainly aren't the only options for a $500 custom build, but those work well for crunching, and it is an example of what you can build for $500 or less. Sorry this is TL;DR. Happy crunching! Kasey Crunchers: 1: Xeon E5-2695 v3 @ 2.5GHz turbo (14C/28T) 2: Xeon E5-2658 v3 @ 2.3GHz turbo (12C/24T) 3: Ryzen 7 1700 @ 3.675GHz OC (8C/16T) 4: Core i7-4700MQ @ 3.2GHz cTDP up (4C/8T) [Edit 1 times, last edit by Kasey Domer at Jun 3, 2016 3:24:01 AM] |
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