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System Builder Marathon, Q3 2013: $350 Bonus Entry-Level PC

Power Consumption And Temperatures

Power Consumption

For this test, we enable power-saving features on each system using the stock and overclocked settings. Bear in mind that we're reporting total draw from the wall, not power supply output. Even though it wasn’t loaded down, we'd expect this quarter’s Antec VP-450 to be more efficient than the tiny 150 W unit bundled with last quarter's ISK300 mini-ITX enclosure.

The $350 PC draws less than 30 W from the wall while idling on the desktop. However, once we load the A10-5800K APU, its consumption peaks well above last quarter's Pentium-based PC. While 3DMark 11’s first game scene is used to isolate the graphics hardware as best as possible, it loads one CPU core as well. 

Temperatures

The $400 PC occupies less volume than an Xbox 360 console and its external power brick, yet efficient components and adequate airflow still kept it running plenty cool under load.

Unfortunately, temperature monitoring is pretty much broken on AMD’s Trinity-based APUs, which makes overclocking a little unnerving. Thermal readings are completely useless. According to some utilities, we were idling at zero degrees Celsius. Others said we were roasting at 97 degrees under load. So, we're reporting CPU socket temperatures for the $350 PC. Cooled by AMD's boxed cooler, the tweaked A10-5800K ran a little hotter than the Pentium and its dedicated Radeon HD 7750 graphics card, despite being housed in a roomier case with more airflow. Even still, the rig was fully stable during our testing.

My biggest concern was the VRMs around the CPU socket. I scoured the board relentlessly with an IR thermometer and found that MOSFET readings varied quite a bit. The top one ran the hottest, idling at a cool 30 degrees, hitting 65 degrees under load at stock settings, and peaking at 70 degrees with a mild overclock. Needless to say, I’d be nervous about trying to get any more from this setup.

  • slomo4sho
    Nice choice in parts (unlike their mid/high end counterparts, the low end MSI boards continue to disappoint. Maybe consider Biostar, ECS, or ASRock in future low end builds) . However, those wanting to cheat can pickup a 750K with 7770 within $20-30 of the price of the APU for overall improved gaming performance. It is interesting what $40-50 can accomplish in these low budget builds :)
    Reply
  • internetlad
    Have to admit, I like where this went. This is a little higher than a similarly priced build I was looking at for my brother in law about a year ago
    Reply
  • rolli59
    Well throw in a HD7750 (can be had for $50 after MIR) and it will keep up with the $400 system in gaming. Since MIR do not count reduce the ram to 2x2GB (Q2 $400build) to offset the cost.
    Reply
  • pauldh
    The promo is now back, so the A10-5800K was (for us) and is once again $110 from Newegg no rebates. We can't match that price too easy with HD7750/7770. Although as rolli said $50 after $30 mail-in rebate + a Pentium gets close (AR).


    EDIT: My mistake! Actually this is a different promo. A $20 gift card. When we chose this part, the savings instantly removed $20 from the shopping cart total.
    Reply
  • sicom
    So a $350 PC has better performance than an Xbox 360, and a $400 PC blows it clear out of the water. Cost of operating system not withstanding. I realize this console generation is nearly ancient history by now, but I still find that interesting, and perhaps because it's not ancient history yet.

    Note of reference: BF3 plays at 720p @ 30 FPS at about medium'ish settings on 360/PS3.
    Reply
  • pauldh
    11609414 said:
    Nice choice in parts. However, those wanting to cheat can pickup a 750K with 7770 within $20-30 of the price of the APU for overall improved gaming performance. It is interesting what $40-50 can accomplish in these low budget builds :)

    That must be a pretty big cheat. ;) But that pairing sure stymies the 6800K's appeal doesn't it.

    You are so right, $40-50 more does wonders. We could make a fun poor man's marathon out of exploring that alone.$400/450/500 gaming faceoff? :D
    Reply
  • aggroboy
    11609551 said:
    So a $350 PC has better performance than an Xbox 360, and a $400 PC blows it clear out of the water. Cost of operating system not withstanding. I realize this console generation is nearly ancient history by now, but I still find that interesting, and perhaps because it's not ancient history yet.

    Note of reference: BF3 plays at 720p @ 30 FPS at about medium'ish settings on 360/PS3.
    You're using 2012-2013 components to compare against a 2005 console.
    Reply
  • itzsnypah
    750K HD7750 4GB RAM and you have much better computer (overall and gaming) for the same price.

    750K vs A10-5800K (CPU wise)
    The same (except 750K no graphics to cool)

    7750 vs 7660D
    512 vs 384 shaders
    GDDR5 vs DDR3
    800Mhz vs 800Mhz

    Did you even consider this or did you go into this budget with your heart set on an APU?
    Reply
  • pauldh
    11609701 said:
    750K HD7750 4GB RAM and you have much better computer (overall and gaming) for the same price.

    750K vs A10-5800K (CPU wise)
    The same (except 750K no graphics to cool)

    7750 vs 7660D
    512 vs 384 shaders
    GDDR5 vs DDR3
    800Mhz vs 800Mhz

    Did you even consider this or did you go into this budget with your heart set on an APU?

    That's an easy answer. The math simply didn't (and still doesn't) add up.

    The cheapest 7750 was $85, the 750K was also $85. That's $170 when the 5800K was $110 with a promo code anyone buying one would have used to save instantly before checking out. The goal was $325 factoring that promotional instant savings.

    And as mentioned in the text on page one, a 4GB mem kit saved only $10, meaning 750K+7750 was still $50 over, which is huge on a $325 budget.

    Although, I knew before order time playing by the rules we'd call this a $350 PC. Hope that all makes sense.
    Reply
  • Memnarchon
    The current APU costs $130. And the memory costs $50. Total: $180.
    Now if you place an Athlon X4 750K 3,4Ghz for $80 or an Ivybridge Pentium G2120 3,1Ghz $70, using a HD 7770 for $90 and for memory 4GB (2 x 2GB) for $35 it will be total: Intel: $195 ($15 more) and AMD:$205 ($25 more).

    Now for $15/$25 you can have double or more performance on games. Why to go with an APU???

    edit: I actually read the article and didn't read all the comments.
    But even if you choose not to go with 7750, according to Tom's hierrarchy chart the 6670 (even the DDR3 version) is still two tiers faster. And I can't remember even prvious month the 6670DDR3 to cost more than $60 (maybe less with some AR) So a 750K or a G2120 (or a bit lower) will still offer better performance at almost same price (the pentium will be the same price) with 4GB RAM.
    Reply