Last month, AMD released several CPUs with a slight speed-bump which also included the Athlon II X4 645. With current 3.1GHz it's the top of the L3 cacheless Propus line. All the other specifications stayed the same, with 4x256 L2 Cache, 64kB Cache for data and instructions per core and a TDP of 95W. While the first Propus Athlon II X4 620 was fired with 1.40V, thankfully AMD reduced the VCore to 1.35V at load and 1.00V in Cool'n'Quiet mode. Let's see how the CPU does.

Testbed:
Motherboard:
ASRock 890GX Extreme 3 (provided byASRock)
AMD 890GX/SB850
MSI P55-GD65 (provided by MSI)
Intel P55
ASRock H55M Pro (provided by ASRock)
Intel H55


CPU:
Intel Pentium G6950, Core i3-530 (provided by Mindfactory)
Intel Core i5-750 (provided by Intel)
AMD Athlon II X4 620/645/X6 1090T (provided by AMD)
AMD Phenom II X6 1055T 95W (provided by ASRock)

CPU-Cooler:
Scythe Grand Kama Cross (provided by Scythe-Europe) for AMD and Intel 1156
Thermalright Ultra 120 eXtreme 1366 (provided by Thermalright) for Intel 1366

Memory:
G.Skill Eco 4GB Kit PC3-12800 (provided by G.Skill)
1067MHz CL7-7-7-20 CR1T 1.35V for Athlon II X2, Pentium G6950, i7-975
1333MHz CL7-7-7-20 CR1T 1.35V for Athlon II X4, Phenom II X4/X6, i3-530, i5-750

Graphics Card:
MSI R4850-2D1G-OC (provided byMSI)

Power supply:
PC Power & Cooling Silencer 500W (provided by PC Power & Cooling)

Hard disk:
Samsung F1 1000GB RAID-Edition (provided by Ditech)

Case fans:
SilenX iXtrema Pro 14dB(A) (provided by PC-Cooling.at)
Scythe DFS122512LS

Case:
Cooler Master Stacker 831 Lite (provided by Cooler Master)

OS:
All tests are performed with XP SP3. As 64-bit software is still not very common, we used the 32-bit version.