ATI Radeon 4870 Running 8x in 16x slot (No Crossfire)

dredg98 · Jun 7, 2010

Here are my system specs ( Not the Greatest but work for me)

OS - Windows 7 Ultimate 64 Bit

Motherboard - Asrock A780gxe/128m

CPU - AMD Phenom II x4 955 c3

RAM - 4GB DDR2 800 (1 2gb and 2 1gb sticks)

Video Card - ATI Radeon 4870 1gb XFX

Hard Drive 500gb Sea gate sata 2 and 1tb Western Digital Black (no raid)

My Video card is in the green x16 slot and the crossfire switch is in the defult x16 slot and when i load up GPUZ and it says Bus Interface PCI-E 2.0 x16 @ 8x 2.0 And says when mouse is hovered over power settings may affect it but my power setting is on high performance. What is wrong i know 8x isnt that much of a performance hit but i just want it to run at 16x. Please do help ask anything ill respond asap. Thanks

slyfox2151 · Jun 7, 2010

take the card out of the socket, blow out any and all dust and double check the contacts.

reinstall the card and double check it in correctly.

8x PCI-E v2 vs 16x really is a VERY small difference in terms of performance.... maybe 1 %?

n-ster · Jun 7, 2010

4870 has virtually NO performance lol in a pcie 2.0 x8 slot, if it were pcie 1.0/1.1, yes, but not 2.0

Athlonite · Jun 7, 2010

Check your bios for PCIe bus settings you may need to set it manually to x16 if it's on Auto detect

Mussels · Jun 7, 2010

n-ster said:
4870 has virtually NO performance lol in a pcie 2.0 x8 slot, if it were pcie 1.0/1.1, yes, but not 2.0

^ what he said

while you may want to fix it, dont worry about it. 8x in 2.0 is not going to slow down anything.

EnglishLion · Jun 8, 2010

I had a very similar problem that I wrote up on my blog - http://www.mods-n-clocks.co.uk/?p=77

Basically it was the motherboard's fault and was cured by a motherboard BIOS update. Slightly different hardware to your setup though.

System Name	MRCOMP!
Processor	5800X3D
Motherboard	MSI Gaming Plus
Cooling	Corsair 280 AIO
Memory	64GB 3600mhz
Video Card(s)	GTX3060
Storage	1TB SSD
Display(s)	Samsung Neo
Case	No Case... just sitting on cardboard :D
Power Supply	Antec 650w

System Name	Homelabs
Processor	Ryzen 5900x \| Ryzen 1920X
Motherboard	Asus ProArt x570 Creator \| AsRock X399 fatal1ty gaming
Cooling	Silent Loop 2 280mm \| Dark Rock Pro TR4
Memory	128GB (4x32gb) DDR4 3600Mhz \| 128GB (8x16GB) DDR4 2933Mhz
Video Card(s)	EVGA RTX 3080 \| ASUS Strix GTX 970
Storage	Optane 900p + NVMe \| Optane 900p + 8TB SATA SSDs + 48TB HDDs
Display(s)	Alienware AW3423dw QD-OLED \| HP Omen 32 1440p
Case	be quiet! Dark Base Pro 900 rev 2 \| be quiet! Silent Base 800
Power Supply	Corsair RM750x + sleeved cables\| EVGA P2 750W
Mouse	Razer Viper Ultimate (still has buttons on the right side, crucial as I'm a southpaw)
Keyboard	Razer Huntsman Elite, Pro Type \| Logitech G915 TKL

System Name	Cumquat 2021
Processor	AMD RyZen R7 7800X3D
Motherboard	Asus Strix X670E - E Gaming WIFI
Cooling	Deep Cool LT720 + CM MasterGel Pro TP + Lian Li Uni Fan V2
Memory	32GB GSkill Trident Z5 Neo 6000
Video Card(s)	Sapphire Nitro+ OC RX6800 16GB DDR6 2270Cclk / 2010Mclk
Storage	1x Adata SX8200PRO NVMe 1TB gen3 x4 1X Samsung 980 Pro NVMe Gen 4 x4 1TB, 12TB of HDD Storage
Display(s)	AOC 24G2 IPS 144Hz FreeSync Premium 1920x1080p
Case	Lian Li O11D XL ROG edition
Audio Device(s)	RX6800 via HDMI + Pioneer VSX-531 amp Technics 100W 5.1 Speaker set
Power Supply	EVGA 1000W G5 Gold
Mouse	Logitech G502 Proteus Core Wired
Keyboard	Logitech G915 Wireless
Software	Windows 11 X64 PRO (build 23H2)
Benchmark Scores	it sucks even more less now ;)

System Name	Rainbow Sparkles (Power efficient, <350W gaming load)
Processor	Ryzen R7 5800x3D (Undervolted, 4.45GHz all core)
Motherboard	Asus x570-F (BIOS Modded)
Cooling	Alphacool Apex UV - Alphacool Eisblock XPX Aurora + EK Quantum ARGB 3090 w/ active backplate
Memory	2x32GB DDR4 3600 Corsair Vengeance RGB @3866 C18-22-22-22-42 TRFC704 (1.4V Hynix MJR - SoC 1.15V)
Video Card(s)	Galax RTX 3090 SG 24GB: Underclocked to 1700Mhz 0.750v (375W down to 250W))
Storage	2TB WD SN850 NVME + 1TB Sasmsung 970 Pro NVME + 1TB Intel 6000P NVME USB 3.2
Display(s)	Phillips 32 32M1N5800A (4k144), LG 32" (4K60) \| Gigabyte G32QC (2k165) \| Phillips 328m6fjrmb (2K144)
Case	Fractal Design R6
Audio Device(s)	Logitech G560 \| Corsair Void pro RGB \|Blue Yeti mic
Power Supply	Fractal Ion+ 2 860W (Platinum) (This thing is God-tier. Silent and TINY)
Mouse	Logitech G Pro wireless + Steelseries Prisma XL
Keyboard	Razer Huntsman TE ( Sexy white keycaps)
VR HMD	Oculus Rift S + Quest 2
Software	Windows 11 pro x64 (Yes, it's genuinely a good OS) OpenRGB - ditch the branded bloatware!
Benchmark Scores	Nyooom.

Processor	Intel Pentium Dual Core E2160
Motherboard	ASUS P5E3 Deluxe
Cooling	Akasa EVO 120
Memory	2 x 1Gb OCZ Gold DDR3 1066Mhz 6,6,6,18
Video Card(s)	GeCube ATi X1950Pro 512Mb PCIe (Accelro X2)
Storage	Samsung 320Gb SATA2
Display(s)	Samsung SM206BW 20" Widescreen TFT 1680x1050
Case	Coolermaster Centurion 532
Audio Device(s)	On board AC'97
Power Supply	Hiper Type-R 580W
Software	Windows Vista Home Premium
Benchmark Scores	See my OC Blog @ http://www.rowan-house.net/

ATI Radeon 4870 Running 8x in 16x slot (No Crossfire)

dredg98

New Member

slyfox2151

n-ster

Athlonite

Mussels

Freshwater Moderator

EnglishLion

New Member