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The BFG GeForce FX 5900XT OC (model BFGR5900XTOC) is a factory-overclocked 128MB graphics card for AGP 4X/8X motherboards—not PCI Express. It runs at a 430MHz core clock with 735MHz effective memory, and uses DVI, VGA and S-Video outputs plus auxiliary Molex power. It is chiefly of interest today for restoring or building a period-correct PC.

BFG GeForce FX 5900XT OC specifications

Specification Details
Model BFGR5900XTOC
Graphics family NVIDIA GeForce FX 5900XT
Slot interface AGP 4X/8X; not PCI Express. Newegg archived product record
Core clock 430MHz, as listed by HotHardware in its 2004 review. HotHardware
Memory 128MB Hynix 2.8ns DDR, on a 256-bit interface; 735MHz effective data rate and 23.5GB/s bandwidth, according to HotHardware’s 2004 specifications. HotHardware
Video outputs DVI, D-Sub (VGA) and S-Video. Newegg archived product record
Auxiliary power 4-pin Molex connector; the archived package included a Molex Y cable. Bjorn3D review

HotHardware explains that “the ‘OC’ in this case stands for overclocked.” The factory clock figures above are the relevant baseline; an “OC” label by itself does not tell you whether another card uses the same clocks or BIOS.

Will it work in your motherboard and power supply?

Motherboard slot

The board is for an AGP slot. Check the motherboard manual or inspect the slot before buying or installing it: an AGP card cannot be installed in a PCIe graphics slot. The product record specifies AGP 4X/8X, so verify that the motherboard supports the card’s AGP generation and voltage requirements; the available specification record does not establish compatibility with every AGP board.

Power and physical condition

Confirm that the power supply has a usable 4-pin Molex connector. If you need a splitter, use a suitable, undamaged cable and avoid overloading a power lead already serving several components. The archived package included a Molex Y cable, but that does not guarantee that a particular used listing still includes it.

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#1 Best Overall
BFG Technologies NVIDIA GeForce 6800GT 256MB GDDR3 AGP Slot Video Card for Desktop
  • 256MB GeForce video card
  • Superscalar GPU architecture
  • NVIDIA CineFX 3.0 engine
  • On-chip video processor
  • Lifetime warranty

Before relying on a surviving card, inspect the fan, capacitors and board for damage, then check for stable video output and memory errors under load. These are prudent checks for old hardware, not results from a current test of this model.

Monitor connections

The card provides DVI, VGA/D-Sub and S-Video. A DVI-to-VGA converter was included in the archived package, which may help connect a VGA display if present; confirm that any used card listing includes the adapter, or source a compatible one separately.

Rank #2
BFG Tech GeForce GTS 250 1GB DDR3 PCI Express (PCI-E) Dual DVI Video Card w/HDCP Support
  • BFG Tech GeForce GTS 250 1024MB DDR3 PCI Express Video Card General Features:
  • NVIDIA GeForce GTS 250 graphics processing unit (GPU) 128 processor cores 738 MHz core clock
  • 1782 MHz shader clock 1024 MB GDDR3 memory 256-bit memory interface 2200 MHz memory data rate
  • PCI Express 2.0 x16 interface 2nd Generation NVIDIA Unified Architecture NVIDIA PhysX Ready
  • 3-way NVIDIA SLI support

Features and historical software context

NVIDIA’s GeForce FX 5900 family overview describes a 256-bit advanced memory interface and features including CineFX 2.0, Intellisample HCT, UltraShadow, AGP 8X, Fast Writes, sideband addressing, dual 400MHz RAMDACs and advanced thermal management. NVIDIA GeForce FX 5900 overview These identify the card with the DirectX 9-era GeForce FX generation; they are not evidence of modern operating-system driver support.

The archived Newegg record lists Windows 95 OSR2, Windows 98 or later, Windows ME, Windows 2000, Windows XP and Windows NT4 with service packs. That historical list does not establish support for Windows 10 or Windows 11. For a restoration, choose an operating system and driver version appropriate to the period build rather than assuming current Windows compatibility.

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Rank #3
BFG Tech Nvidia Geforce 7300 GT 512MB DDR AGP 8x Video Graphics Card
  • Box Contents - BFG NVIDIA GeForce 7300GT 512MB graphics card
  • GPU - NVIDIA GeForce 7300 GT
  • Bus Type - AGP 8X
  • Memory - 512MB DDR2
  • Core Clock - 350MHz

What the 2004 performance results do—and do not—show

In Bjorn3D’s 2004 test, the card was installed in an AMD Athlon XP 2500+ system with 512MB DDR, Windows 2000 Professional SP4, DirectX 9.0b and NVIDIA ForceWare 56.72 WHQL drivers. In Unreal Tournament 2004’s DM Rankin test, it averaged 125.13 fps at 1024×768 without antialiasing or anisotropic filtering, using the card’s 430/735 settings. At 1600×1024 with 4× antialiasing and 8× anisotropic filtering, the same test averaged 61.09 fps. Bjorn3D’s 2004 review

These are results from that specific game, configuration and period test system, not a prediction for a modern PC or other games. In the same review, Bjorn3D reached 471MHz core and 795MHz memory using NVIDIA Coolbits controls. That is a review overclock result, not a guaranteed stable setting for every card; age, cooling and component condition can affect what a particular board sustains.

Rank #4
BFG BFGEGTX2851024OCE GeForce GTX 285 OC 1GB GDDR3 PCI Express 2.0 Graphics Card
  • Overclocked out of the box to deliver a free performance boost over standard models
  • Full Microsoft DirectX 10, shader model 4.0 and PCI Express 2.0 support
  • Free 24/7/365 Tech Support and lifetime warranty
  • Display Connectors: 2 Dual-link DVI-I, HDTV + TV out
  • Hdcp capable, HDMI capable with included adapter kit
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Support on Ko-Fi

What to check when comparing used GeForce FX cards

For comparisons with another GeForce FX 5900/5950 or FX 5700, verify the exact board model and compare the factors that affect fit and use:

  • Slot type and AGP compatibility
  • Factory core clock and effective memory rate
  • Memory capacity and bus width
  • Auxiliary power connector requirements
  • Video outputs and any included adapters
  • Cooling hardware and the card’s physical condition
  • Driver availability for the operating system you intend to run

Current price, stock, seller condition and warranty availability are not established here and can vary between listings. Treat this as a legacy restoration or collecting card, and check the individual board and included accessories before purchasing.

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Quick Recap

Bestseller No. 1
BFG Technologies NVIDIA GeForce 6800GT 256MB GDDR3 AGP Slot Video Card for Desktop
BFG Technologies NVIDIA GeForce 6800GT 256MB GDDR3 AGP Slot Video Card for Desktop
256MB GeForce video card; Superscalar GPU architecture; NVIDIA CineFX 3.0 engine; On-chip video processor
$299.99
Bestseller No. 2
BFG Tech GeForce GTS 250 1GB DDR3 PCI Express (PCI-E) Dual DVI Video Card w/HDCP Support
BFG Tech GeForce GTS 250 1GB DDR3 PCI Express (PCI-E) Dual DVI Video Card w/HDCP Support
BFG Tech GeForce GTS 250 1024MB DDR3 PCI Express Video Card General Features:; 3-way NVIDIA SLI support
$58.96
Bestseller No. 3
BFG Tech Nvidia Geforce 7300 GT 512MB DDR AGP 8x Video Graphics Card
BFG Tech Nvidia Geforce 7300 GT 512MB DDR AGP 8x Video Graphics Card
Box Contents - BFG NVIDIA GeForce 7300GT 512MB graphics card; GPU - NVIDIA GeForce 7300 GT
$149.99
Bestseller No. 4
BFG BFGEGTX2851024OCE GeForce GTX 285 OC 1GB GDDR3 PCI Express 2.0 Graphics Card
BFG BFGEGTX2851024OCE GeForce GTX 285 OC 1GB GDDR3 PCI Express 2.0 Graphics Card
Overclocked out of the box to deliver a free performance boost over standard models; Full Microsoft DirectX 10, shader model 4.0 and PCI Express 2.0 support
$137.98
Best Value
QTHREE GeForce GT 730 4GB Graphics Card,2X HDMI, DP,VGA,DDR3,64 Bit,Low Profile Video Card for PC,Computer GPU,PCI Express X8,SFF,DirectX 12,Support Winows 11
  • NVIDIA GT 730 graphics cards offer basic display capabilities for office work and light multimedia,which with 1000 MHz Memory Clock 4GB DDR3 on Kepler architecture, support multiple monitors and HD video playback,easily upgrading for convenient usage to save your budget for your old pc
  • The low-profile design of the PC graphics card saves installation space, easy to install,plug &play,making it easy to build a compact computer system, even compatible with ITX chassis.
  • The 4x outputs enables multi-monitor productivity on up to 4 monitors simultaneously,including 2x HDMI,VGA,DP.Designed for full-size chassis and small case installations.
  • PCI Express based PC is required with one X8 lane graphics slot available on the motherboard. 300 Watt or greater power supply. This video card can automatically install new drivers and support Win11,DirectX 12.
  • 30W low power,no external power supply and the all-solid-state capacitor keeps low power consumption and high performance.If you have any problems about this card,please contact us via amazon messages.

Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.