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Sapphire 7950 oc abnormally

post #1 of 3
Thread Starter 
hey ppls i, when i got my 7950(sapphire dual-x ( the 925 edition)) 2 days ago i've started to oc it off that bat and i was testing what kind of FPS i could get in dirt 3 at ultra(since it has a in build benchmark tool) and when i played it with my 7950 at

1150/1550 @ 1.2v(1200mv) it gave me around 45FPS and i'm like hmmmmmm? ok.
however when i decied to run it at stock
925/1250 it gave me 'bout double the FPS at around 80 FPS

and i got no idea what is wrong. Its properly because i did not re install catalyst when i switch from my HD 6870 which i dont think matters. and the voltage seems right.

so help.
Edited by saber101 - 2/3/13 at 6:37am
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AMD Build[HTPC]
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(23 items)
 
Intel
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CPUMotherboardRAMRAM
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Western Digital Green Coolmaster hyper 212 window 7 Home Medion[OEM] 
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cheapo psu[Shaw] Thermaltake V3 Gigabyte usb 3.0 PCI-E  
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i5 3470 Gigabyte Z77H-WiFi Sapphire 7950 3GB OC with boost Ripjaws 
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post #2 of 3
the normal procedure for installing a new card is
1. uninstall old card in device manager.
2. shut down PC. plug in new card.
3. boot to windows and reinstall the latest drivers.

so its better you reinstall drivers. first uninstall your card. go to control panel -> system-> advanced system settings-> hardware -> device manager -> dsiplay adapter . your card will be named as AMD HD 7900 series. right click and uninstall. reboot your machine. install the latest 13.2 beta 4 driver

http://support.amd.com/us/kbarticles/Pages/AMDCatalyst132BetaDriver.aspx

if you want to install the 13.1 whql driver then install the 12.11 cap 2. in the 13.2 beta 4 driver the CAP is integrated in the driver. after installing drivers check the card at stock. enable AMD Overdrive in AMD CCC under performance tab. max out power control to +20% in AMD Overdrive in AMD CCC to avoid clock throttling. check performance using benchmarks like 3D Mark 11, Heaven 3.0 at stock 925 mhz boost. compare with other users in HD 7900 users thread. once you have confirmed the card works fine at stock then overclock.

if you want voltage overclocking disable AMD CCC. install sapphire trixx. max out Board power Li to +20%. you can easily run at 1100 mhz at stock voltage. if you have artifacts, freezes or crashes in benchmarks / games you can increase voltage using VDDC in 0.05v steps. test and tweak voltage (if required) till you reach desired clocks. thumb.gif
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post #3 of 3
Thread Starter 
yeah it seems i do need to re install catalyst did not think i've have to since i was using a 6870, anyway thats that worked. though for some reason sapphire trxx dont remember my voltage settings
AMD Build[HTPC]
(12 items)
 
Trueno
(23 items)
 
Intel
(13 items)
 
CPUMotherboardRAMRAM
AMD Phenom II X4 955 Black Edition Gigabyte 880G UD3H Corsair 2x2GB partriot 2x2GB 
Hard DriveCoolingOSKeyboard
Western Digital Green Coolmaster hyper 212 window 7 Home Medion[OEM] 
PowerCaseOther
cheapo psu[Shaw] Thermaltake V3 Gigabyte usb 3.0 PCI-E  
CPUMotherboardGraphicsRAM
i5 3470 Gigabyte Z77H-WiFi Sapphire 7950 3GB OC with boost Ripjaws 
Hard DriveHard DriveHard DriveCooling
Samsang 830 128GB SSD Segate SV35 WD Green Caviar 2TB  Phobya UC-2 LT Intel CPU Block - Plexi Edition  
CoolingCoolingCoolingOS
EK D5 Vario 12 DC Pump  RS240 Radiator  Bitspower Water Tank Z-Multi 150 Reservoir  Window 8 Pro 
MonitorMonitorKeyboardPower
ViewSonic 21 inch Asus MX279H Corsair K65 Antec Neo Eco 620Watt 
CaseMouseOtherOther
BitFenix Prodigy Roccat Kova+  PrimoChill PrimoFlex Advanced LRT Tubing   Phobya 1/2 Barbed Fitting with O-Ring G1/4  
OtherOtherOther
EK Ekoolant UV Blue Premix coolant  Phobya LED Flexlight High Density 30cm UV  EK 970 waterblock 
CPUMotherboardGraphicsRAM
Core 2 Quad Q8300 OEM(MSI) GT 220 4GB DDR2  
Hard DriveOptical DriveCoolingOS
WD samsung stock window 7 ultimate 64 
MonitorKeyboardPowerCase
phillps 19 inch OEM OEM OEM 
Mouse
OEM 
  hide details  
Reply
AMD Build[HTPC]
(12 items)
 
Trueno
(23 items)
 
Intel
(13 items)
 
CPUMotherboardRAMRAM
AMD Phenom II X4 955 Black Edition Gigabyte 880G UD3H Corsair 2x2GB partriot 2x2GB 
Hard DriveCoolingOSKeyboard
Western Digital Green Coolmaster hyper 212 window 7 Home Medion[OEM] 
PowerCaseOther
cheapo psu[Shaw] Thermaltake V3 Gigabyte usb 3.0 PCI-E  
CPUMotherboardGraphicsRAM
i5 3470 Gigabyte Z77H-WiFi Sapphire 7950 3GB OC with boost Ripjaws 
Hard DriveHard DriveHard DriveCooling
Samsang 830 128GB SSD Segate SV35 WD Green Caviar 2TB  Phobya UC-2 LT Intel CPU Block - Plexi Edition  
CoolingCoolingCoolingOS
EK D5 Vario 12 DC Pump  RS240 Radiator  Bitspower Water Tank Z-Multi 150 Reservoir  Window 8 Pro 
MonitorMonitorKeyboardPower
ViewSonic 21 inch Asus MX279H Corsair K65 Antec Neo Eco 620Watt 
CaseMouseOtherOther
BitFenix Prodigy Roccat Kova+  PrimoChill PrimoFlex Advanced LRT Tubing   Phobya 1/2 Barbed Fitting with O-Ring G1/4  
OtherOtherOther
EK Ekoolant UV Blue Premix coolant  Phobya LED Flexlight High Density 30cm UV  EK 970 waterblock 
CPUMotherboardGraphicsRAM
Core 2 Quad Q8300 OEM(MSI) GT 220 4GB DDR2  
Hard DriveOptical DriveCoolingOS
WD samsung stock window 7 ultimate 64 
MonitorKeyboardPowerCase
phillps 19 inch OEM OEM OEM 
Mouse
OEM 
  hide details  
Reply
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