Athlon 64 X2 Energy Efficient Processors

Article Index:   

 

Below are our systems specs for the various configurations we tested.  Next we'll step through some initial voltage and temperature measurements we with these new energy efficient Athlon 64 X2 chips. 

HotHardware's Test Systems
AMD & Intel Inside!

System 1:
Intel Core 2 Duo E6700
(2.66GHz)

Intel D975XBX
(975X Express)

Asus P5B Deluxe WiFi-AP Edition
(P965 Chipset)

Asus P5N32-SLI Deluxe SE
(NVIDIA nForce 4 SLIX16)

2x512MB Corsair PC-8500
CL 4-4-4-12-1T - DDR2-800

2xGeForce 7900 GTX
On-Board Ethernet
On-board Audio

WD740 "Raptor" HD
10,000 RPM SATA

Windows XP Pro SP2
Intel INF 8.0.1.1002
nForce 4 Drivers v6.86
NVIDIA Forceware v91.27
DirectX 9.0c

System 2:
AMD Athlon 64 X2 4600+ (2.4GHz)
AMD Athlon 64 X2 3800+ (2.0GHz)
AMD Athlon 64 X2 5000+ (2.6GHz)

Asus M2NPV-VM
(nForce 430)

Asus M2N32-SLI Deluxe
(NVIDIA nForce 590 SLI)
(Overclocking and Power tests only)

2x512MB Corsair PC-8500
CL 4-4-4-12-1T - DDR2-800

2xGeForce 7900 GTX
On-board Ethernet
On-board Audio

WD740 "Raptor" HD
10,000 RPM SATA

Windows XP Pro SP2
nForce 4 Drivers v6.86
NVIDIA Forceware v91.27
DirectX 9.0c
System 3:
Intel Pentium XE 965
(3.73GHz)

Intel D975XBX Motherboard
(975x Chipset)

2x512MB Corsair PC-8500
CL 4-4-4-12-1T - DDR2-800

GeForce 7900 GTX (CPU Tests)
On-board Ethernet
On-board Audio

WD740 "Raptor" HD
10,000 RPM SATA

Windows XP Pro SP2
Intel INF 8.0.1.1002
NVIDIA Forceware v91.27
DirectX 9.0c
Processors Vital Signs And Temperatures
Lower Voltages, Less Heat

A quick scan in CPU-Z shows just what voltages and clock speeds the two new chips are running at in our test system.  

CPU-Z Processor Details - Athlon 64 X2 3800+ And 4600+

Here we see the Athlon 64 3800+ EE clocking in at 2GHz and a svelte 1.02v, while the 4600+ EE show 2.4GHz at 1.184v.  Incidentally, these tests were run with AMD "Cool-n-Quiet" disabled to show the processors in their full-speed state.  Next we'll show you what Cool-n-Quiet clock gating looks like under no-load conditions.   

  Temperature And Voltage Monitor - No Load 


Athlon 64 X2 3800+

Athlon 64 X2 4600+

Both the Energy Efficient Athlon 64 3800+ and Athlon 64 4600+ drop down to 1GHz speeds when Cool-n-Quiet is enabled and there is no load on the CPU.  Notice the 4600+ drops its voltage down to about 1v as well, like the 3800+

Temperature And Voltage Monitor - Full Load 


Athlon 64 X2 3800+

Athlon 64 X2 4600+

At full clock speed and 100% load the new Energy Efficient Athlon 64s show impressive thermal characteristics. The 3800+ still oscillates around the 1v threshold at its core and the 4600+ has now ramped up to 1.15v according to Asus' PC Probe utility.  Let's graph the temps for you here and compare them to similar architectures.

Please keep in mind that these core CPU temperatures were recorded on an open air bench test with ambient room temp of about 20oC or 68oF.  Processor core temperatures would likely ramp higher in closed chassis environments.  Regardless, fully loaded, the new energy efficient Athlon's show excellent thermal characteristics. Incidentally, we tested with a stock all copper Athlon 64 X2 cooler, though AMD supplied us with a lower profile aluminum/copper hybrid cooler, since these lower operating temp ranges require much less exotic cooling solutions.

Image gallery

Related content

Comments

Post a Comment
or Register to comment