AMD Phenom II X2 N640

AMD N640

The AMD Phenom II Dual-Core Mobile N640 is a dual core processor for laptops that clocks with 2.9 GHz. Due to the missing level 3 cache, the architecture is similar to the desktop Athlon II X2 (Athlon II X2 245 - Regor).

The performance should be similar to a 2.7 GHz Core 2 Duo (because of the larger Cache of the Core 2 series in this clock range). Compared to current Intel Core-i processors, the Phenom II N640 is only as fast as an entry level Core i3-350M in synthetic benchmarks.

As a difference to the Core 2 series, the Phenom II offers an integrated DDR3 memory controller on the processor die.

SeriesAMD Phenom II X2
CodenameChamplain
Clock Rate2900 MHz
Front Side Bus3600 MHz
Level 1 Cache256 KB
Level 2 Cache2048 KB
Number of Cores / Threads2 / 2
Max. Power Consumption (TDP = Thermal Design Power)35 Watt
Manufacturing Technology45 nm
SocketS1
FeaturesDDR3 memory controller, HyperTransport 3.0, SSE4A, AMD64, Enhanced Virus Protection, Vurtualization
64 Bit64 Bit support
Hardware VirtualizationAMD-V
Announcement Date10/01/2010

CPU Benchmarks

PCMark Vantage: Result 1024x768
0% 100%
min: 4127     avg: 4127 (14.58%)     max: 4127 Points
Cinebench R11.5: CPU Multi 64Bit
0% 100%
min: 1.66     avg: 1.7 (12.28%)     max: 1.66 Points
- Range of benchmarks for this CPU
- Average benchmark score

Cinebench R11.5 in comparison
Intel Atom N450 (min)
0.2 
...
Intel Pentium B940
1.6 
Intel Pentium B960
1.6 
Intel Pentium B970
1.7 
AMD Phenom II X2 N640
1.7 
AMD A-Series A10-4655M
1.7 
Intel Core i3 330M
1.7 
AMD A-Series (Desktop) AMD A6-6400K
1.7 
...
Intel Xeon (Desktop) E5-2680 (max)
12 

Reviews for the AMD Phenom II X2 N640 processor

Toshiba Satellite L675D-S7052 (ATI Radeon HD 4250, 17.3")
» Toshiba Satellite L675D-S7052 - External Review

» Mobile CPU Comparison
Comparison of all mobile CPU series

» Mobile Processors - Benchmarklist
Benchmarklist of all known CPUs that are used in laptops (desktop and laptop CPUs)

Other CPUs of the series AMD Phenom II X2

» AMD Phenom II X2 X640 BE
   3.2 GHz / 2 MB
» AMD Phenom II X2 X620 BE
   3.1 GHz / 2 MB
» AMD Phenom II X2 N660
   3 GHz / 2 MB
» AMD Phenom II X2 N640
   2.9 GHz / 2 MB
» AMD Phenom II X2 P650
   2.8 GHz / 2 MB
» AMD Phenom II X2 N620
   2.8 GHz / 2 MB

Surrounding CPUs

- Intel Core 2 Duo T9300
   2.5 GHz / 6 MB
- AMD Phenom II X2 N660
   3 GHz / 2 MB
- Intel Celeron 1020M
   2.1 GHz / 0.5 MB + 2 MB
- Intel Core i3 350M
   2.26 GHz / 0.5 MB + 3 MB
- Intel Pentium B960
   2.2 GHz / 0.5 MB + 2 MB
» AMD Phenom II X2 N640
   2.9 GHz / 2 MB
+ Intel Core 2 Extreme X7800
   2.6 GHz / 4096 KB
+ Intel Core 2 Duo T7800
   2.6 GHz / 4096 KB
+ Intel Core 2 Duo P8700
   2.53 GHz / 3072 KB
+ Intel Core i3 4020Y
   1.5 GHz / 512 KB + 3072 KB
+ Intel Core i3 4012Y
   1.5 GHz / 512 KB + 3072 KB
> Notebook / Laptop Reviews and News > FAQ / Tips / Technics > Notebook Processors > AMD Phenom II X2 N640 Notebook Processor
Author: Klaus Hinum (Update: 2012-05-26)