Intel Core i7-975 vs Intel Xeon E5-649

Compare Intel Core 4 core CPU vs Intel Xeon 6 core processor, specs and benchmark score. Which is the better CPU for gaming?

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Benchmark Score

Overall Score

A combined score of all workloads

1889 points
1937 points
2% slightly better overall score

Gaming Score

The raw gaming performance with a fast GPU

3014 points
3123 points
3% slightly better gaming score

Multitasking Score

Performance in workloads using up to 8 cores

1556 points
1567 points
0.71% slightly better multitasking score

Heavy Workload Score

Performance in workloads using up to 16 cores

1494 points
1504 points
0.67% slightly better heavy workload score

Free CPU Benchmark

Want to compare your processor against the Core i7-975 and the Xeon E5-649? Download our free and quick PC Performance Test.

Other Benchmarks

Geekbench 6 (multi) score

Geekbench 6 (multi) score

Multi threaded benchmark

1859 points
2109 points
13% slightly higher Geekbench 6 (multi) score
Geekbench 6 (single) score

Geekbench 6 (single) score

Single threaded benchmark

538 points
29% slightly higher Geekbench 6 (single) score
415 points

Specifications

Cores

Number of physical processing units

4
6
49% significantly more cores

Threads

Number of logical processing units

8
33% slightly more threads
6

Clock Speed

Base frequency at which the chip operates

3.33 GHz
31% slightly higher clock speed
2.53 GHz

Turbo Speed

Higher frequency used for heavy workloads

3.6 GHz
22% slightly higher turbo speed
2.93 GHz

TDP

Thermal Design Power: Measure of heat generated by the CPU

130 W
80 W
62% significantly lower TDP

Memory Channels

Lanes for simultaneous memory access

3
Identical
3

Supported Memory

Maximum amount of RAM supported by this CPU

24 GiB
288 GiB
1100% significantly more supported memory

Other details

Rank

Ranking in the hardwareDB database

742nd of 1,089
730th of 1,089

Family

The product line

Core
Xeon

Release date

The official date of release of this chip

2009 May
2011 February

Memory Type

The type of memory used by this chip

DDR3-1066
DDR3-1066

Supports ECC memory

Does this CPU support error correcting memory

No
Yes

Core i7-975 vs Xeon E5-649 benchmarks

Our benchmark analysis concludes that the Xeon E5-649 performs better than the Core i7-975. Furthermore, our gaming benchmark shows that it also outperforms the Core i7-975 in all gaming tests too.

When comparing core counts for these CPUs, we notice that the Xeon E5-649 has significantly more cores with 6 cores compared to the Core i7-975 that has 4 cores. Despite this, the Core i7-975 has more threads than the Xeon E5-649. These CPUs have different clock speeds. Indeed, the Core i7-975 has a slightly higher clock speed compared to the Xeon E5-649. Also, the Core i7-975 has a slightly higher turbo speed. The Xeon E5-649 outputs less heat than Core i7-975 thanks to a significantly lower TDP. This measures the amount of heat they output and can be used to estimate power consumption.

The more cores a CPU has, the better the overall performance will be in parallel workloads such as multitasking. Many CPUs have more threads than cores, this means that each physical core is split into multiple logical cores, making them more efficient. Indeed, the Core i7-975 has more threads than cores. Each physical core is split into multiple threads.

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