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  1. #1
    Player
    KisaiTenshi's Avatar
    Join Date
    Sep 2013
    Location
    Gridania
    Posts
    2,775
    Character
    Kisa Kisa
    World
    Excalibur
    Main Class
    White Mage Lv 100
    Quote Originally Posted by Kittra View Post
    I run FFXIV on a i7 3770k machine which reports all 4 cores and all 8 threads being utilized at 20-35%. So there is some merit to having more cores, but really it depends the type of CPU whether or not it can actually utilize them all for a single application.
    I don't want to say you're wrong, but that's not how HT works. When a single-threaded (or poorly threaded game, which is most games) is scheduled to run, it's sent to the cores that are not busy. So you'll see all the cores in use at a 100% division of the number of cores. So 4 cores, 25%, 8 cores 12.5%, etc. But HT is not a real CPU core, it splits the CPU in half, so you have either 2 logical cores with half the ALU's or 1 physical core with all it's ALU's. Generally you don't want HT while playing games.

    I wrote more here, but I think I'm preaching at the choir. Basically, untick some cores until at least one core is at 100% while running FFXIV and that will tell you how many cores it's designed to use.
    (0)

  2. #2
    Player
    Kittra's Avatar
    Join Date
    Apr 2011
    Posts
    349
    Character
    Kittra Thelder
    World
    Hyperion
    Main Class
    Lancer Lv 50
    Quote Originally Posted by KisaiTenshi View Post
    I don't want to say you're wrong, but that's not how HT works. When a single-threaded (or poorly threaded game, which is most games) is scheduled to run, it's sent to the cores that are not busy. So you'll see all the cores in use at a 100% division of the number of cores. So 4 cores, 25%, 8 cores 12.5%, etc. But HT is not a real CPU core, it splits the CPU in half, so you have either 2 logical cores with half the ALU's or 1 physical core with all it's ALU's. Generally you don't want HT while playing games.

    I wrote more here, but I think I'm preaching at the choir. Basically, untick some cores until at least one core is at 100% while running FFXIV and that will tell you how many cores it's designed to use.

    Servers are back up!

    Ok so I decided to test this in a highly populated area to maximize the strain on my CPU and slowly dropped the core affinity in task manager.

    At 8 HT cores (not sure what else to call it) CPU usage was about 30-34% across all 8. At an affinity of 7 (one HT turned off) usage went to 40~% across 7.

    At this point I just dropped it to an affinity of 4 so that only the actual "physical" cores of my i7 were processing FFXIV and CPU usage rocketed all the way up to 100% solid.

    I added one HT core (for a total affinity of 5) and usage was 95%~ across the 5 cores.


    So either the i7 is extremely efficient in passing around the workload, or SE programmed their client with multiple cores in mind.
    Another discovery I made is that at below 4 cores FFXIV starts experiencing frame drops.
    (0)

  3. #3
    Player
    Faewyn's Avatar
    Join Date
    Sep 2013
    Posts
    5
    Character
    Faewyn Moonlara
    World
    Zalera
    Main Class
    Arcanist Lv 1
    Found a really good deal on this PC - ...should solve all my FFXIV woes!

    CyberpowerPC Gamer Ultra GUA390 Desktop

    Summary
    Processor #FX-Series Quad-Core FX-4100 Processor 3.6 GHz (4 MB cache)
    RAM 8 GB SDRAM DDR3
    Hard Drive 2048 GB SATAIII
    Graphics Coprocessor AMD Radeon HD 7750
    Graphics Card Ram Size 1024 MB
    Number of USB 2.0 Ports 7
    Expand
    Other Technical Details
    Brand Name CyberpowerPC
    Series Gamer Ultra
    Item model number GUA390
    Hardware Platform PC
    Operating System Windows 8
    Item Weight 28 pounds
    Item Dimensions L x W x H 19.60 x 7.50 x 16.80 inches
    Color Blue / black
    Processor Brand AMD
    Processor Count 1
    Computer Memory Type DDR3 SDRAM
    Hard Drive Interface Serial ATA-600
    Hard Drive Rotational Speed 7200 RPM
    Optical Drive Type 24x DVD±RW Dual-Layer Super-Multi Drive
    Audio-out Ports (#) 2

    (0)
    Faewyn - "The world we have made as a result of the level of thinking we have done thus far creates problems that we can't solve at the same level as the level we created them at" - Einstein

  4. #4
    Player
    Kittra's Avatar
    Join Date
    Apr 2011
    Posts
    349
    Character
    Kittra Thelder
    World
    Hyperion
    Main Class
    Lancer Lv 50
    Quote Originally Posted by Faewyn View Post
    Found a really good deal on this PC - ...should solve all my FFXIV woes!

    CyberpowerPC Gamer Ultra GUA390 Desktop

    Summary
    Processor #FX-Series Quad-Core FX-4100 Processor 3.6 GHz (4 MB cache)
    RAM 8 GB SDRAM DDR3
    Hard Drive 2048 GB SATAIII
    Graphics Coprocessor AMD Radeon HD 7750
    Graphics Card Ram Size 1024 MB
    Number of USB 2.0 Ports 7
    Expand
    Other Technical Details
    Brand Name CyberpowerPC
    Series Gamer Ultra
    Item model number GUA390
    Hardware Platform PC
    Operating System Windows 8
    Item Weight 28 pounds
    Item Dimensions L x W x H 19.60 x 7.50 x 16.80 inches
    Color Blue / black
    Processor Brand AMD
    Processor Count 1
    Computer Memory Type DDR3 SDRAM
    Hard Drive Interface Serial ATA-600
    Hard Drive Rotational Speed 7200 RPM
    Optical Drive Type 24x DVD±RW Dual-Layer Super-Multi Drive
    Audio-out Ports (#) 2

    I can't find anything wrong with that PC.

    Personally I prefer to build them myself, but I've heard good things about CyberPowerPC.
    (0)

  5. #5
    Player
    JamieLee's Avatar
    Join Date
    Aug 2013
    Posts
    110
    Character
    Evangline Fox
    World
    Hyperion
    Main Class
    Archer Lv 38
    Quote Originally Posted by Kittra View Post
    Servers are back up!

    Ok so I decided to test this in a highly populated area to maximize the strain on my CPU and slowly dropped the core affinity in task manager.

    At 8 HT cores (not sure what else to call it) CPU usage was about 30-34% across all 8. At an affinity of 7 (one HT turned off) usage went to 40~% across 7.

    At this point I just dropped it to an affinity of 4 so that only the actual "physical" cores of my i7 were processing FFXIV and CPU usage rocketed all the way up to 100% solid.

    I added one HT core (for a total affinity of 5) and usage was 95%~ across the 5 cores.


    So either the i7 is extremely efficient in passing around the workload, or SE programmed their client with multiple cores in mind.
    Another discovery I made is that at below 4 cores FFXIV starts experiencing frame drops.

    actually you can run @ 3 cores and get 0 preformance drop.. dual core and single core setups get wrecked even with decent gpu's..
    (0)

    http://www.bronyland.com/pony-personality-test/?q=MDYzNXw4MDc4NjE

  6. #6
    Player
    Kittra's Avatar
    Join Date
    Apr 2011
    Posts
    349
    Character
    Kittra Thelder
    World
    Hyperion
    Main Class
    Lancer Lv 50
    Quote Originally Posted by JamieLee View Post
    actually you can run @ 3 cores and get 0 preformance drop.. dual core and single core setups get wrecked even with decent gpu's..
    Well what I meant was, below 4 cores my i7 experiences frame drops, not in general, lol.
    (0)