Sapphire ATI Radeon HD 4830 1024MB GDDR3 TV-Out/Dual DVI/HDMI (PCI-Express) - Retail
Performance wise the HD 4830 seems to lie between the 4670 and 4850, surpassing the 3870 but slightly (5%) below the 4770. The 4770 was designed as a direct replacement for the 4830.
This has 1GB memory.
Novatech only have 2 in stock at the moment and, not having used them before I don't know whether these will be put on back order or not. It is possible that as this card is being phased out and replaced by the 4770 that these are end of line.
Free supersaver delivery available.