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mosibfu

AMD Graphics Detection "Bug"

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Hi there,

 

I have found some "errors" on the graphics tab. (and nowhere else, custom voltage settings get detected perfectly and stuff, so great job!)

 

About my setup:

Windows 8.1 Pro 64-bit

i have 2 sapphire HD 7870's,

one is the ghz edition, running stock at 1000/1200mhz

one is the oc edition, running stock at 1050/1250mhz.

 

Here is what happens for me;

for both cards the performance levels get detected as 1000mhz/1200mhz.

HOWEVER!! the actual GPU clock's (1000/1050) and memory bandwidth is correct, 153,6GB/s for the ghz edition, and 160GB/s for the oc edition.

Speccy does see the difference between the cards.

 

also, the OC edition does not get the bios version, and crossfire is "Disabled", this however might be something with the way the AMD driver works, since the 2nd card is "powered off" when i am not in fullscreen, and crossfire does not work unless I run games fullscreen.

 

I just checked GPU-z, and it does get the bios version of the 2nd card, and also that crossfire is Enabled (or disabled when i disable it in CCC).

 

Now, with gpu-z open, it does get the bios version of the 2nd card. After closing gpu-z, and restarting speccy, it still gives me the bios version of the 2nd card, i will reboot now and report my findings.

 

After rebooting, i again, do not get the bios information on the 2nd card, i suspect gpu-z somehow wakes up the 2nd card to get this information, and after waking the card up, speccy can access the information aswell.

 

I just tried making a new application profile for gpu-z in CCC, and i did not get a warning that i was overwriting an existing profile, so i dont think there is a hidden feature in the driver that wakes it up for gpu-z, but rather it is gpu-z that does something to wake the 2nd card up.

 

I copy pasted the info speccy gives me, I hope this helps you, if you need any more info/testing or stuff, feel free to contact me.

 

Keep up the great work!

 

Graphics
        Monitor
            Name    S27B350 on AMD Radeon HD 7800 Series
            Current Resolution    1920x1080 pixels
            Work Resolution    1920x1050 pixels
            State    Enabled, Primary, Output devices support, Unsafe
            Monitor Width    1920
            Monitor Height    1080
            Monitor BPP    32 bits per pixel
            Monitor Frequency    60 Hz
            Device    \\.\DISPLAY1\Monitor0
        ATI AMD Radeon HD 7800 Series
            Manufacturer    ATI
            Model    AMD Radeon HD 7800 Series
            Device ID    1002-6818
            Subvendor    Sapphire/PCPartner (174B)
            Current Performance Level    Level 0
            Voltage    0.900 V
            Current Performance Level    Level 0
            Voltage    0.900 V
            GPU Clock    1000.0 MHz
            Temperature    42 °C
            Core Voltage    0.900 V
            Crossfire    Disabled
            Bios Core Clock    150.00
            Bios Mem Clock    150.00
            Driver version    14.501.1003.0
            BIOS Version    113-217XTHYE-S01
            Memory Type    GDDR5
            Memory    2048 MB
            Bandwidth    153.6 GB/s
                Count of performance levels : 2
                        Level 1 - "Perf Level 0"
                            GPU Clock    300 MHz
                            Memory Clock    150 MHz
                        Level 2 - "Perf Level 1"
                            GPU Clock    1000 MHz
                            Memory Clock    1200 MHz
                Count of performance levels : 1
                    Level 1 - "Perf Level 0"
        ATI AMD Radeon HD 7800 Series
            Manufacturer    ATI
            Model    AMD Radeon HD 7800 Series
            Device ID    1002-6818
            Subvendor    Sapphire/PCPartner (174B)
            Current Performance Level    Level 0
            Voltage    0.900 V
            Current Performance Level    Level 0
            Voltage    0.900 V
            GPU Clock    1050.0 MHz
            Temperature    30 °C
            Core Voltage    0.825 V
            Crossfire    Disabled
            Bios Core Clock    150.00
            Bios Mem Clock    150.00
            Driver version    14.501.1003.0
            Memory Type    GDDR5
            Memory    2048 MB
            Bandwidth    160.0 GB/s
                Count of performance levels : 2
                        Level 1 - "Perf Level 0"
                            GPU Clock    300 MHz
                            Memory Clock    150 MHz
                        Level 2 - "Perf Level 1"
                            GPU Clock    1000 MHz
                            Memory Clock    1200 MHz
                Count of performance levels : 1
                    Level 1 - "Perf Level 0"

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