i7-975 vs i7-990X EE

VS

Aggregate performance score

Core i7-990X EE
6 cores / 12 threads, 130 Watt
4.33
+89.9%

Core i7-990X EE outperforms Core i7-975 by an impressive 90% based on our aggregate benchmark results.

Primary details

Comparing Core i7-990X EE and Core i7-975 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking13731828
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluationno data0.10
Market segmentDesktop processorDesktop processor
SeriesCore i7 (Desktop)Core i7 (Desktop)
Power efficiency3.041.60
Architecture codenameGulftown (2010−2011)Bloomfield (2008−2010)
Release dateno data (2024 years ago)2 June 2009 (15 years ago)
Launch price (MSRP)no data$476

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Core i7-990X EE and Core i7-975 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 cores6 (Hexa-Core)4 (Quad-Core)
Threads128
Base clock speedno data3.33 GHz
Boost clock speed3.73 GHz3.6 GHz
Bus rate6400 MHz1333 MHz
L1 cacheno data64 KB (per core)
L2 cacheno data256 KB (per core)
L3 cacheno data8 MB (shared)
Chip lithography32 nm45 nm
Die sizeno data263 mm2
Maximum case temperature (TCase)no data68 °C
Number of transistorsno data731 million
64 bit support++
Windows 11 compatibility--
Unlocked multiplier-+

Compatibility

Information on Core i7-990X EE and Core i7-975 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 configurationno data1
SocketLGA-1366FCLGA1366
Power consumption (TDP)130 Watt130 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-990X EE and Core i7-975. You'll probably need this information if you require some particular technology.

Instruction set extensionsno dataIntel® SSE4.2
Enhanced SpeedStep (EIST)no data+
Turbo Boost Technologyno data1.0
Hyper-Threading Technologyno data+
Idle Statesno data+
Demand Based Switchingno data-
PAEno data36 Bit

Security technologies

Core i7-990X EE and Core i7-975 technologies aimed at improving security, for example, by protecting against hacks.

TXTno data+
EDBno data+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-990X EE and Core i7-975 are enumerated here.

VT-xno data+
EPTno data+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-990X EE and Core i7-975. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesno dataDDR3
Maximum memory sizeno data24 GB
Max memory channelsno data3
Maximum memory bandwidthno data25.6 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardno dataN/A

Peripherals

Specifications and connection of peripherals supported by Core i7-990X EE and Core i7-975.

PCIe versionno data2.0

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.

i7-990X EE 4.33
+89.9%
i7-975 2.28

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.

i7-990X EE 6624
+89.6%
i7-975 3493

Cinebench 10 32-bit single-core

Cinebench R10 is an ancient ray tracing benchmark for processors by Maxon, authors of Cinema 4D. Its single core version uses just one CPU thread to render a futuristic looking motorcycle.

i7-990X EE 4204
+2.5%
i7-975 4101

Cinebench 10 32-bit multi-core

Cinebench Release 10 Multi Core is a variant of Cinebench R10 using all the processor threads. Possible number of threads is limited by 16 in this version.

i7-990X EE 22228
+33.7%
i7-975 16628

3DMark06 CPU

3DMark06 is a discontinued DirectX 9 benchmark suite from Futuremark. Its CPU part contains two scenarios, one dedicated to artificial intelligence pathfinding, another to game physics using PhysX package.

i7-990X EE 7042
+20.7%
i7-975 5837

wPrime 32

wPrime 32M is a math multi-thread processor test, which calculates square roots of first 32 million integer numbers. Its result is measured in seconds, so that the less is benchmark result, the faster the processor.

i7-990X EE 5.17
+42.4%
i7-975 7.36

Cinebench 11.5 64-bit multi-core

Cinebench Release 11.5 Multi Core is a variant of Cinebench R11.5 which uses all the processor threads. A maximum of 64 threads is supported in this version.

i7-990X EE 9
+47.5%
i7-975 6

Gaming performance

Pros & cons summary


Performance score 4.33 2.28
Physical cores 6 4
Threads 12 8
Chip lithography 32 nm 45 nm

i7-990X EE has a 89.9% higher aggregate performance score, 50% more physical cores and 50% more threads, and a 40.6% more advanced lithography process.

The Core i7-990X EE is our recommended choice as it beats the Core i7-975 in performance tests.


Should you still have questions on choice between Core i7-990X EE and Core i7-975, ask them in Comments section, and we shall answer.

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.


Intel Core i7-990X EE
Core i7-990X EE
Intel Core i7-975
Core i7-975

Similar processor comparisons

We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.

Community ratings

Here you can see how users rate the processors, as well as rate them yourself.


3.3 45 votes

Rate Core i7-990X EE on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5
3.6 25 votes

Rate Core i7-975 on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5

Questions & comments

Here you can ask a question about Core i7-990X EE or Core i7-975, agree or disagree with our judgements, or report an error or mismatch.