Sempron LE-1250 vs Athlon II X4 645

Place in the ranking	2155	3235
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	3.30	no data
Market segment	Desktop processor	Desktop processor
Power efficiency	1.47	0.40
Architecture codename	Propus (2009−2011)	Sparta (2007)
Release date	21 September 2010 (14 years ago)	October 2007 (17 years ago)
Launch price (MSRP)	$80	$29

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Athlon II X4 645 and Sempron LE-1250 basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores	4 (Quad-Core)	1 (Single-Core)
Threads	4	1
Base clock speed	3.1 GHz	no data
Boost clock speed	3.1 GHz	2.2 GHz
L1 cache	128 KB (per core)	128 KB
L2 cache	512 KB (per core)	512 KB
L3 cache	0 KB	0 KB
Chip lithography	45 nm	65 nm
Die size	169 mm²	no data
Number of transistors	300 million	no data
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Athlon II X4 645 and Sempron LE-1250 compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration	1	1
Socket	AM3	AM2
Power consumption (TDP)	95 Watt	45 Watt

Memory specs

Types, maximum amount and channel quantity of RAM supported by Athlon II X4 645 and Sempron LE-1250. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR3

no data

Peripherals

Specifications and connection of peripherals supported by Athlon II X4 645 and Sempron LE-1250.

PCIe version

2.0

no data

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

Athlon II X4 645 1.48
+679%

Sempron LE-1250 0.19

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

Athlon II X4 645 2348
+680%

Sempron LE-1250 301

Gaming performance

Pros & cons summary

Performance score	1.48	0.19
Physical cores	4	1
Threads	4	1
Chip lithography	45 nm	65 nm
Power consumption (TDP)	95 Watt	45 Watt

Athlon II X4 645 has a 678.9% higher aggregate performance score, 300% more physical cores and 300% more threads, and a 44.4% more advanced lithography process.

Sempron LE-1250, on the other hand, has 111.1% lower power consumption.

The Athlon II X4 645 is our recommended choice as it beats the Sempron LE-1250 in performance tests.

Should you still have questions on choice between Athlon II X4 645 and Sempron LE-1250, ask them in Comments section, and we shall answer.