AMD Phenom X4 9850B vs AMD Phenom X3 8400

Comparative analysis of AMD Phenom X4 9850B and AMD Phenom X3 8400 processors for all known characteristics in the following categories: Essentials, Performance, Compatibility, Virtualization. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark, Geekbench 4 - Single Core, Geekbench 4 - Multi-Core.

AMD Phenom X4 9850B

AMD Phenom X3 8400

Differences

Reasons to consider the AMD Phenom X4 9850B

CPU is newer: launch date 5 month(s) later
1 more cores, run more applications at once: 4 vs 3
Around 19% higher clock speed: 2.5 GHz vs 2.1 GHz
Around 33% more L1 cache; more data can be stored in the L1 cache for quick access later
Around 33% more L2 cache; more data can be stored in the L2 cache for quick access later
Around 21% better performance in PassMark - Single thread mark: 992 vs 819
Around 67% better performance in PassMark - CPU mark: 1946 vs 1164

Specifications (specs)
Launch date	August 2008 vs March 2008
Number of cores	4 vs 3
Maximum frequency	2.5 GHz vs 2.1 GHz
L1 cache	128 KB (per core) vs 128 KB (per core)
L2 cache	512 KB (per core) vs 512 KB (per core)
Benchmarks
PassMark - Single thread mark	992 vs 819
PassMark - CPU mark	1946 vs 1164

Compare benchmarks

CPU 1: AMD Phenom X4 9850B
CPU 2: AMD Phenom X3 8400

PassMark - Single thread mark

CPU 1

CPU 2

992

819

PassMark - CPU mark

CPU 1

CPU 2

1946

1164

Name	AMD Phenom X4 9850B	AMD Phenom X3 8400
PassMark - Single thread mark	992	819
PassMark - CPU mark	1946	1164
Geekbench 4 - Single Core		973
Geekbench 4 - Multi-Core		2405

Compare specifications (specs)

	AMD Phenom X4 9850B	AMD Phenom X3 8400
Essentials
Architecture codename	Agena	Toliman
Launch date	August 2008	March 2008
Place in performance rating	2267	2287
Vertical segment	Desktop	Desktop
Performance
64 bit support
Die size	285 mm	285 mm
L1 cache	128 KB (per core)	128 KB (per core)
L2 cache	512 KB (per core)	512 KB (per core)
L3 cache	2048 KB (shared)	2048 KB (shared)
Manufacturing process technology	65 nm	65 nm
Maximum frequency	2.5 GHz	2.1 GHz
Number of cores	4	3
Transistor count	450 million	450 million
Compatibility
Max number of CPUs in a configuration	1	1
Sockets supported	AM2+	AM2+
Thermal Design Power (TDP)	95 Watt	95 Watt
Virtualization
AMD Virtualization (AMD-V™)