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AMD 64 Build |
Sunday, 24 September 06, 9:47 am Rich |
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The AMD 64 comes in two primary types, the standard AMD 64, and the AMD 64 FX. The former uses a socket 754 connection, while the latter uses 940 (which is the same as the Opteron, AMD's 64-bit server CPU). The 64 FX is designed with high-end 3D games in mind. Early nForce3 boards had issues, which may or may not be resolved now. VIA also made an early AMD 64 chipset, the K8T800, which did not suffer from such drawbacks.
The different pin count of the two Hammer CPUs is due to the fact that the Athlon 64 FX has a dual-channel memory interface as well as three HyperTransport ports. The standard Athlon 64 only has one single-channel memory interface and one HyperTransport port. It seems all recent AMD 64 CPUs can operate with DDR2 RAM. The AMD 64 CPUs contain the memory interface integrated on the processor, rather than in an external chip on the motherboard (the Northbridge). However, although faster, DDR2 does not in practice come close to twice the read speed as attained by DDR1. According to an article on Tom's Hardware Guide in May 2006, write speeds are in fact worse than with DDR1 on AMD 64 CPUs that run at less than 2.4 GHz (ie below a 64 3800+). However, both the read and the write problems appear to be due to the low latency of DDR2 chips, which was CL4 in May 2006. |
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Rich10:34 am, Sunday, 24 September 06 |
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So what's needed for such a machine?
MOTHERBOARDS Apparently, the Via VT 8251 chipset does not support SATA 2 properly, which causes issues with some HDDs. To play safe, I'll avoid bottom-end boards. ECS KN1 Lite Socket 939 nForce4 Ultra PCI-E 6channel audio ATX £52.95 inc VAT - PCI-E, PCI-E 16, dual channel DDR1, SATA1 Asus A8N-VM CSM Socket 939 NVC51PV Green M-ATX VGA Sound Lan USB 2.0 1394 FSB 1000 £49.13 inc VAT - X2 CPU support, dual channel DDR 400, PCI-Express architecture, Gigabit LAN, and SATA II RAID 5 Foxconn SKT939 Nforce4-SLI chipset DDR400 Dual Gigabit LAN SATAII ATX Motherboard £61.99 Inc. VAT - dual channel DDR1, SATA1, video? ECS NFORCE3-A939 SKT939 nforce3 250 AGP SATA 6channel audio ATX £29.64 inc VAT - AGP, dual channel DDR1, SATA1 HARD DRIVES Seagate ST3250820AS 250GB 7200RPM SATA300 8MB Cache £50.13 Inc. VAT MEMORY Kingston 1GB DDR PC3200 400MHz Non-ECC CL3 (3-3-3) £72.93 inc VAT CPU AMD (Venice) Athlon 64 3800+ 939pin 512Kb L2 Cache 90nm Retail Boxed Processor, Fan Included £71.50 inc VAT AMD Sempron 3000+ (SDA3000BXBOX) 64 Bit Architecture 1.8Ghz Skt 754 Boxed - £34.17 inc VAT DVD RW Samsung SH-S162A 16x DVD±RW/RAM Internal IDE (Beige) £17.62 inc VAT - the cheapest one, good spec. Black other makes for a couple of quid extra VIDEO Hightech X300 SE 128MB 64bit DDR PCI-E DVI & TV £25.17 inc VAT KEYBOARD MOUSE SPEAKERS CASE Casecom KB-7760 Beige ATX Midi Tower Case £9.99 inc VAT - No PSU PSU Must be SATA, 400W+, with 24 pin m/b power. Ebuyer do not do these!!! DISPLAY BARE BONES Foxconn MiniFX SKT939 Barebone System - Silver/Black MATX Case with 350W PSU - Includes Foxconn 6150K8MA-8EKRS SKT939 Motherboard £81.98 inc VAT - built in Graphics & sound, Dual channel DDR400 x4, 350 PSU, inc keyboard & mouse. 2 IDE, 4 SATA. Needs CPU (maybe Sempron - is PSU enough for AMD 64?), HDD, DVD-RW, memory MSI Barebone System - Mega MPC800K - SKT754 £79.99 inc VAT - inc card reader, looks good, on-board video not as good as Foxconn, but has AGP |
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